Compound vs. Pen — What's the Difference?

To combine so as to form a whole; mix

A pen is a common writing instrument used to apply ink to a surface, usually paper, for writing or drawing. Historically, reed pens, quill pens, and dip pens were used, with a nib dipped in ink.

To produce or create by combining two or more ingredients or parts; compose or make up

An instrument for writing or drawing with ink, typically consisting of a metal nib or ball, or a nylon tip, fitted into a metal or plastic holder.

To settle (a debt, for example) by agreeing on an amount less than the claim; adjust.

The tapering cartilaginous internal shell of a squid.

To compute (interest) on the principal and accrued interest.

A small enclosure in which sheep, pigs, or other farm animals are kept

To add to or intensify so as to make worse

(in the West Indies) a farm or plantation.

To make worse by being an additional or intensifying factor

A female swan.

To combine in or form a compound.

Short for penitentiary (sense 1)

To come to terms; agree.

Write or compose

Consisting of two or more substances, ingredients, elements, or parts.

Put or keep (an animal) in a pen

(Botany) Composed of more than one part

A ballpoint pen.

A combination of two or more elements or parts.

A fountain pen.

(Linguistics) A word that consists either of two or more elements that are independent words, such as loudspeaker, self-portrait, or high school, or of specially modified combining forms of words, such as Greek philosophia, from philo-, "loving," and sophia, "wisdom."

A pen point.

(Chemistry) A pure, macroscopically homogeneous substance consisting of atoms or ions of two or more different elements in definite proportions that cannot be separated by physical means. A compound usually has properties unlike those of its constituent elements.

A penholder and its pen point.

A building or buildings, especially a residence or group of residences, set off and enclosed by a barrier.

A quill.

An enclosed area used for confining prisoners of war.

An instrument for writing regarded as a means of expression

An enclosure within which workers, prisoners, or soldiers are confined.

A writer or an author

An enclosure for secure storage.

A style of writing

A group of buildings situated close together, e.g. for a school or block of offices.

A pen-shaped device containing something other than ink

Anything made by combining several things.

Any of various other pen-shaped devices, such as a laser pointer.

(chemistry) A substance formed by chemical bonding of two or more elements in definite proportions by weight.

The chitinous internal shell of a squid.

A substance made from any combination of ingredients.

A pen shell.

(linguistics) A lexeme that consists of more than one stem.

Pens(Archaic) The primary feathers or wings of a bird.

(linguistics) A lexeme that consists of more than one stem or an affix, e.g. bookshop, high school or non-standard.

A fenced enclosure for animals.

(rail) A compound locomotive, a steam locomotive with both high-pressure and low-pressure cylinders.

The animals kept in such an enclosure.

Composed of elements; not simple.

Any of various enclosures, such as a bullpen or playpen, used for a variety of purposes.

(math) Dealing with numbers of various denominations of quantity, or with processes more complex than the simple process.

A roofed dock for submarines.

(music) An octave higher than originally (i.e. a compound major second is equivalent to a major ninth).

A female swan.

(transitive) To form (a resulting mixture) by combining different elements, ingredients, or parts; to mingle with something else.

A penitentiary; a prison.

To settle by agreeing on less than the claim, or on different terms than those stipulated.

To write or compose

(transitive) To settle amicably; to adjust by agreement.

To confine in or as if in a pen.

(intransitive) To come to terms of agreement; to settle by a compromise.

An enclosure (enclosed area) used to contain domesticated animals, especially sheep or cattle.

To compose; to constitute.

(slang) Penitentiary, i.e. a state or federal prison for convicted felons.

To increase in value with interest, where the interest is earned on both the principal sum and prior earned interest.

(baseball) The bullpen.

To worsen a situation.

A tool, originally made from a feather but now usually a small tubular instrument, containing ink used to write or make marks.

Of a horse: to fail to maintain speed.

(figurative) A writer, or their style.

In the East Indies, an inclosure containing a house, outbuildings, etc.

(colloquial) Marks of ink left by a pen.

That which is compounded or formed by the union or mixture of elements ingredients, or parts; a combination of simples; a compound word; the result of composition.

A light pen.

A union of two or more ingredients in definite proportions by weight, so combined as to form a distinct substance; as, water is a compound of oxygen and hydrogen.

(zoology) The internal cartilage skeleton of a squid, shaped like a pen.

To form or make by combining different elements, ingredients, or parts; as, to compound a medicine.

A feather, especially one of the flight feathers of a bird, angel etc.

To put together, as elements, ingredients, or parts, in order to form a whole; to combine, mix, or unite.

(poetic) A wing.

To modify or change by combination with some other thing or part; to mingle with something else.

A female swan.

To compose; to constitute.

Penalty.

To settle amicably; to adjust by agreement; to compromise; to discharge from obligation upon terms different from those which were stipulated; as, to compound a debt.

(transitive) To enclose in a pen.

To effect a composition; to come to terms of agreement; to agree; to settle by a compromise; - usually followed by with before the person participating, and for before the thing compounded or the consideration.

(transitive) To write (an article, a book, etc.).

Composed of two or more elements, ingredients, parts; produced by the union of several ingredients, parts, or things; composite; as, a compound word.

A feather.

(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

A wing.

A whole formed by a union of two or more elements or parts

An instrument used for writing with ink, formerly made of a reed, or of the quill of a goose or other bird, but now also of other materials, as of steel, gold, etc. Also, originally, a stylus or other instrument for scratching or graving.

An enclosure of residences and other building (especially in the Orient)

Fig.: A writer, or his style; as, he has a sharp pen.

Make more intense, stronger, or more marked;

The internal shell of a squid.

Put or add together;

A female swan; - contrasted with cob, the male swan.

Calculate principal and interest

A small inclosure; as, a pen for sheep or for pigs.

Create by mixing or combining

A penitentiary[6]; a prison.

Combine so as to form a whole; mix;

To write; to compose and commit to paper; to indite; to compose; as, to pen a sonnet.

Of leaf shapes; of leaves composed of several similar parts or lobes

To shut up, as in a pen or cage; to confine in a small inclosure or narrow space; to coop up, or shut in; to inclose.

Consisting of two or more substances or ingredients or elements or parts;

A writing implement with a point from which ink flows

Composed of many distinct individuals united to form a whole or colony;

An enclosure for confining livestock

A portable enclosure in which babies may be left to play

A correctional institution for those convicted of major crimes

Female swan

Produce a literary work;