blenny vs Molly Miller

blenny and Molly Miller both are nouns.

Word	Noun	Adjective	Verb	Adverb
blenny	Yes	No	No	No
Molly Miller	Yes	No	No	No

As nouns, Molly Miller is a hyponym of blenny; that is, Molly Miller is a word with a more specific, narrower meaning than blenny:

blenny: small usually scaleless fishes with comb-like teeth living about rocky shores; are territorial and live in holes between rocks
Molly Miller: inhabits both coasts of tropical Atlantic

Other hyponyms of blenny include Blennius pholis, shanny, Scartella cristata.

blenny (noun)	Molly Miller (noun)
small usually scaleless fishes with comb-like teeth living about rocky shores; are territorial and live in holes between rocks	inhabits both coasts of tropical Atlantic