pipefish vs teleost

pipefish and teleost both are nouns.

Word	Noun	Adjective	Verb	Adverb
pipefish	Yes	No	No	No
teleost	Yes	No	No	No

As nouns, teleost is a hypernym of pipefish; that is, teleost is a word with a broader meaning than pipefish:

pipefish: fish with long tubular snout and slim body covered with bony plates
teleost: a bony fish of the subclass Teleostei

Other hypernyms of pipefish include teleost fish, teleostan.

pipefish (noun)	teleost (noun)
fish with long tubular snout and slim body covered with bony plates	a bony fish of the subclass Teleostei