cyprinid vs minnow

cyprinid and minnow both are nouns.

Word	Noun	Adjective	Verb	Adverb
cyprinid	Yes	Yes	No	No
minnow	Yes	No	No	No

As nouns, minnow is a hyponym of cyprinid; that is, minnow is a word with a more specific, narrower meaning than cyprinid:

cyprinid: soft-finned mainly freshwater fishes typically having toothless jaws and cycloid scales
minnow: very small European freshwater fish common in gravelly streams

cyprinid (noun)	minnow (noun)
soft-finned mainly freshwater fishes typically having toothless jaws and cycloid scales	very small European freshwater fish common in gravelly streams

cyprinid (adjective)	minnow (adjective)
of or relating to members of fish family Cyprinidae