largemouthed black bass vs Micropterus salmoides

largemouthed black bass and Micropterus salmoides both are nouns.

Word	Noun	Adjective	Verb	Adverb
largemouthed black bass	Yes	No	No	No
Micropterus salmoides	Yes	No	No	No

As nouns, largemouthed black bass and Micropterus salmoides are synonyms defined as:

largemouthed black bass and Micropterus salmoides: a large black bass; the angle of the jaw falls behind the eye

Other synonyms of largemouthed black bass include largemouth, largemouth bass, largemouth black bass, largemouthed bass.

largemouthed black bass (noun)	Micropterus salmoides (noun)
a large black bass; the angle of the jaw falls behind the eye	a large black bass; the angle of the jaw falls behind the eye