Caiman sclerops vs cayman

Caiman sclerops and cayman both are nouns.

Word	Noun	Adjective	Verb	Adverb
Caiman sclerops	Yes	No	No	No
cayman	Yes	No	No	No

As nouns, cayman is a hypernym of Caiman sclerops; that is, cayman is a word with a broader meaning than Caiman sclerops:

Caiman sclerops: caiman with bony ridges about the eyes; found from southern Mexico to Argentina
cayman: a semiaquatic reptile of Central and South America that resembles an alligator but has a more heavily armored belly

Other hypernyms of Caiman sclerops include caiman.

Caiman sclerops (noun)	cayman (noun)
caiman with bony ridges about the eyes; found from southern Mexico to Argentina	a semiaquatic reptile of Central and South America that resembles an alligator but has a more heavily armored belly