dory vs blue pickerel

dory and blue pickerel both are nouns.

Word	Noun	Adjective	Verb	Adverb
dory	Yes	No	No	No
blue pickerel	Yes	No	No	No

As nouns, blue pickerel is a hyponym of dory; that is, blue pickerel is a word with a more specific, narrower meaning than dory:

Other hyponyms of dory include blue pike, blue pikeperch, blue walleye, Strizostedion vitreum glaucum.

dory (noun)	blue pickerel (noun)
marine fishes widely distributed in mid-waters and deep slope waters	variety inhabiting the Great Lakes
pike-like freshwater perches
a small boat of shallow draft with cross thwarts for seats and rowlocks for oars with which it is propelled