Mononychus olecranus vs genus Mononychus

Mononychus olecranus and genus Mononychus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mononychus olecranus	Yes	No	No	No
genus Mononychus	Yes	No	No	No

Mononychus olecranus (noun)	genus Mononychus (noun)
a turkey-sized long-legged fossil 75 million years old found in the Gobi Desert having bird-like fused wrist bones and keeled breastbone and a long tail resembling a dinosaur's; short forelimbs end in a single claw instead of wings; classification as bird or dinosaur is in dispute	authorities disagree over whether to classify the genus as bird or dinosaur