polychaete worm vs polychete

polychaete worm and polychete both are nouns.

Word	Noun	Adjective	Verb	Adverb
polychaete worm	Yes	No	No	No
polychete	Yes	No	No	No

As nouns, polychaete worm and polychete are synonyms defined as:

polychaete worm and polychete: chiefly marine annelids possessing both sexes and having paired appendages (parapodia) bearing bristles

Other synonyms of polychaete worm include polychaete, polychete worm.

polychaete worm (noun)	polychete (noun)
chiefly marine annelids possessing both sexes and having paired appendages (parapodia) bearing bristles	chiefly marine annelids possessing both sexes and having paired appendages (parapodia) bearing bristles