Reptile vs. Amphibian — What's the Difference?

Reptiles, as most commonly defined, are the animals in the class Reptilia , a paraphyletic grouping comprising all amniotes except synapsids (mammals and their extinct relatives) and Aves (birds). The class comprises turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives.

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

Any of various usually cold-blooded egg-laying vertebrates often grouped in the class Reptilia, having dry skin covered with scales or horny plates and breathing by means of lungs, and including the snakes, lizards, crocodilians, and turtles. In some classification systems, birds are considered to be reptiles because they are descended from reptilian dinosaurs.

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.

A person regarded as contemptible or obsequious.

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

(strictly) A cold-blooded vertebrate of the class Reptilia; an amniote that is neither a synapsid nor a bird; excludes amphibians.

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

A reptile or amphibian.

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

(figuratively) A mean or grovelling person.

Of or relating to the class Amphibia.

Creeping; moving on the belly, or by means of small and short legs.

Capable of operating on both land and water amphibious.

Grovelling; low; vulgar.

(obsolete) Having two natures.

Creeping; moving on the belly, or by means of small and short legs.

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

Hence: Groveling; low; vulgar; as, a reptile race or crew; reptile vices.

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

An animal that crawls, or moves on its belly, as snakes,, or by means of small, short legs, as lizards, and the like.

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

One of the Reptilia, or one of the Amphibia.

One of the Amphibia.

A groveling or very mean person.

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

Any cold-blooded vertebrate of the class Reptilia including tortoises turtles snakes lizards alligators crocodiles and extinct forms

An airplane designed to take off and land on water

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

Relating to or characteristic of animals of the class Amphibia