Aves vs. Reptilia — What's the Difference?

An expression of greeting or farewell.

Plural of reptilium

Ave Roman Catholic Church Ave Maria.

A class of air-breathing oviparous vertebrates, usually covered with scales or bony plates. The heart generally has two auricles and one ventricle. The development of the young is the same as that of birds.

Plural of ave

Class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a body usually covered with scales or horny plates; once the dominant land animals

The class of Vertebrata that includes the birds.

Birds