halfbeak vs teleost fish

halfbeak and teleost fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
halfbeak	Yes	No	No	No
teleost fish	Yes	No	No	No

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

halfbeak: tropical and subtropical marine and freshwater fishes having an elongated body and long protruding lower jaw
teleost fish: a bony fish of the subclass Teleostei

Other hypernyms of halfbeak include teleost, teleostan.

halfbeak (noun)	teleost fish (noun)
tropical and subtropical marine and freshwater fishes having an elongated body and long protruding lower jaw	a bony fish of the subclass Teleostei