Tomistoma vs reptile genus

Tomistoma and reptile genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tomistoma	Yes	No	No	No
reptile genus	Yes	No	No	No

As nouns, reptile genus is a hypernym of Tomistoma; that is, reptile genus is a word with a broader meaning than Tomistoma:

Tomistoma (noun)	reptile genus (noun)
a genus of Malayan crocodiles	a genus of reptiles