Insect vs. Amphibian — What's the Difference?

Insects or Insecta (from Latin insectum) are pancrustacean hexapod invertebrates and the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae.

Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia.

A small arthropod animal that has six legs and generally one or two pairs of wings

Any of various cold-blooded, usually smooth-skinned vertebrates of the class Amphibia, characteristically hatching as an aquatic larva with gills and then transforming into an adult having air-breathing lungs. Frogs, toads, salamanders, and caecilians are amphibians.

Any of numerous arthropod animals of the class Insecta, having an adult stage characterized by three pairs of legs and a body segmented into head, thorax, and abdomen and usually having one or two pairs of wings. Insects include the flies, crickets, mosquitoes, beetles, butterflies, and bees.

An animal capable of living both on land and in water.

Any of various other small, chiefly arthropod animals, such as spiders, centipedes, or ticks, usually having many legs. Not in scientific use.

An aircraft that can take off and land on either land or water.

An insignificant or contemptible person.

A tracked or wheeled vehicle that can operate both on land and in water.

An arthropod (in the Insecta class) characterized by six legs, up to four wings, and a chitinous exoskeleton.

Of or relating to the class Amphibia.

(colloquial) Any small arthropod similar to an insect, including spiders, centipedes, millipedes, etc.

Capable of operating on both land and water amphibious.

(derogatory) A contemptible or powerless person.

(obsolete) Having two natures.

One of the Insecta; esp., one of the Hexapoda. See Insecta.

An animal of the Amphibia; any four-legged vertebrate that does not have amniotic eggs, living both on land and in water.

Any air-breathing arthropod, as a spider or scorpion.

A vehicle which can operate on land and water. See Wikipedia article on "Amphibious aircraft"

Any small crustacean. In a wider sense, the word is often loosely applied to various small invertebrates.

Of or pertaining to the Amphibia; as, amphibian reptiles.

Fig.: Any small, trivial, or contemptible person or thing.

One of the Amphibia.

Of or pertaining to an insect or insects.

A flat-bottomed motor vehicle that can travel on land or water

Like an insect; small; mean; ephemeral.

An airplane designed to take off and land on water

Small air-breathing arthropod

Cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form

A person who has a nasty or unethical character undeserving of respect

Relating to or characteristic of animals of the class Amphibia