smallmouthed bass vs smallmouthed black bass

smallmouthed bass and smallmouthed black bass both are nouns.

Word	Noun	Adjective	Verb	Adverb
smallmouthed bass	Yes	No	No	No
smallmouthed black bass	Yes	No	No	No

As nouns, smallmouthed bass and smallmouthed black bass are synonyms defined as:

smallmouthed bass and smallmouthed black bass: a variety of black bass; the angle of the jaw falls below the eye

Other synonyms of smallmouthed bass include Micropterus dolomieu, smallmouth, smallmouth bass, smallmouth black bass.

smallmouthed bass (noun)	smallmouthed black bass (noun)
a variety of black bass; the angle of the jaw falls below the eye	a variety of black bass; the angle of the jaw falls below the eye