protoavis vs genus Protoavis

protoavis and genus Protoavis both are nouns.

Word	Noun	Adjective	Verb	Adverb
protoavis	Yes	No	No	No
genus Protoavis	Yes	No	No	No

protoavis (noun)	genus Protoavis (noun)
most primitive avian type known; extinct bird of the Triassic having bird-like jaw and hollow limbs and breastbone with dinosaur-like tail and hind limbs	extinct primitive birds of the Triassic period; 70 million years before archaeopteryx