As vs. Per - What's the difference?

Wiktionary

  • As (adverb)

    To such an extent or degree.

    "You’re not as tall as I am."

    "It's not as well made, but it's twice as expensive."

  • As (adverb)

    In the manner or role specified.

    "The kidnappers released him as agreed."

    "The parties were seen as agreeing on a range of issues."

    "He was never seen as the boss, but rather as a friend."

  • As (adverb)

    For example compare such as.

  • As (conjunction)

    In the same way that; according to what.

    "Do as I say!"

    "I'm under a lot of pressure, as you know."

    "As you wish, my lord!"

  • As (conjunction)

    At the same instant that; when.

    "As I came in, she flew."

  • As (conjunction)

    At the same time that; while.

    "He sleeps as the rain falls."

  • As (conjunction)

    Varying through time in the same proportion that.

    "As my fear grew, so did my legs become heavy."

  • As (conjunction)

    Being that, considering that, because, since.

    "As it’s too late, I quit."

  • As (conjunction)

    Introducing a basis of comparison, after as, so, or a comparison of equality.

    "She's twice as strong as I was two years ago."

    "It's not so complicated as I expected."

  • As (conjunction)

    Introducing a comparison with a hypothetical state (+ subjunctive); ‘as though’, ‘as if’. to 19th century

  • As (conjunction)

    Introducing a comparison with a hypothetical state with the verb elided; as if, as though.

  • As (conjunction)

    Functioning as a relative conjunction; that. from 14th c.

  • As (conjunction)

    Expressing concession; though.

  • As (conjunction)

    Than.

  • As (preposition)

    Introducing a basis of comparison, with an object in the objective case.

    "You are not as tall as me."

    "They're big as houses."

  • As (preposition)

    In the role of.

    "What is your opinion as a parent?"

  • As (noun)

    A libra.

  • As (noun)

    Any of several coins of Rome, coined in bronze or later copper; or the equivalent value.

  • As (noun)

    plural of a

  • Per (preposition)

    For each.

    "Admission is £10 per person."

  • Per (preposition)

    To each, in each (used in expressing ratios of units).

    "miles per gallon"

    "beats per minute"

    "$2.50 per dozen"

  • Per (preposition)

    Via (the), by (the), through (the) followed by Latin name for an orifice.

    "Introduce the endoscope per nasum."

    "The medication is to be administered per os."

  • Per (preposition)

    In accordance with.

    "I parked my car at the curb per your request."

  • Per (pronoun)

    They singular. Gender-neutral third-person singular subject pronoun, coordinate with gendered pronouns she.}}

  • Per (pronoun)

    Them singular Gender-neutral third-person singular object pronoun, grammatically equivalent to the gendered her.}}

  • Per (adjective)

    Belonging to per, their singular. Gender-neutral third-person singular possessive adjective, coordinate with gendered her.}}

Oxford Dictionary

  • As (adverb)

    used in comparisons to refer to the extent or degree of something

    "go as fast as you can"

    "it tasted like grape juice but not as sweet"

  • As (adverb)

    used to emphasize an amount

    "as many as twenty-two rare species may be at risk"

  • As (conjunction)

    used to indicate that something happens during the time when something else is taking place

    "Frank watched him as he ambled through the crowd"

    "as she grew older, she kept more to herself"

  • As (conjunction)

    used to indicate by comparison the way that something happens or is done

    "they can do as they wish"

    "she kissed him goodbye, as usual"

  • As (conjunction)

    used to add or interject a comment relating to the statement of a fact

    "as you can see, I didn't go after all"

  • As (conjunction)

    because; since

    "I must stop now as I have to go out"

  • As (conjunction)

    even though

    "try as he might, he failed to pull it off"

    "sweet as he is, he doesn't pay his bills"

  • As (preposition)

    used to refer to the function or character that someone or something has

    "she got a job as a cook"

    "it came as a shock"

  • As (preposition)

    during the time of being (the thing specified)

    "he had often been ill as a child"

  • As (noun)

    an ancient Roman copper coin.

  • Per (preposition)

    for each (used with units to express a rate)

    "he charges £2 per square yard"

  • Per (preposition)

    by means of

    "send it per express"

  • Per (preposition)

    divided by a line in the direction of

    "per saltire"

Webster Dictionary

  • As (adverb)

    Denoting equality or likeness in kind, degree, or manner; like; similar to; in the same manner with or in which; in accordance with; in proportion to; to the extent or degree in which or to which; equally; no less than; as, ye shall be as gods, knowing good and evil; you will reap as you sow; do as you are bidden.

  • As (adverb)

    In the idea, character, or condition of, - limiting the view to certain attributes or relations; as, virtue considered as virtue; this actor will appear as Hamlet.

  • As (adverb)

    While; during or at the same time that; when; as, he trembled as he spoke.

  • As (adverb)

    Because; since; it being the case that.

  • As (adverb)

    Expressing concession. (Often approaching though in meaning).

  • As (adverb)

    That, introducing or expressing a result or consequence, after the correlatives so and such.

  • As (adverb)

    As if; as though.

  • As (adverb)

    For instance; by way of example; thus; - used to introduce illustrative phrases, sentences, or citations.

  • As (adverb)

    Than.

  • As (adverb)

    Expressing a wish.

  • As (noun)

    An ace.

  • As (noun)

    the chemical symbol for arsenic.

  • As (noun)

    A Roman weight, answering to the libra or pound, equal to nearly eleven ounces Troy weight. It was divided into twelve ounces.

  • As (noun)

    A Roman copper coin, originally of a pound weight (12 oz.); but reduced, after the first Punic war, to two ounces; in the second Punic war, to one ounce; and afterwards to half an ounce.

  • Per (preposition)

    Through; by means of; through the agency of; by; for; for each; as, per annum; per capita, by heads, or according to individuals; per curiam, by the court; per se, by itself, of itself. Per is also sometimes used with English words.

Princeton's WordNet

  • As (noun)

    a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar

  • As (noun)

    a United States territory on the eastern part of the island of Samoa

  • As (adverb)

    to the same degree (often followed by `as');

    "they were equally beautiful"

    "birds were singing and the child sang as sweetly"

    "sang as sweetly as a nightingale"

    "he is every bit as mean as she is"

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