choanocyte vs collar cell

choanocyte and collar cell both are nouns.

Word	Noun	Adjective	Verb	Adverb
choanocyte	Yes	No	No	No
collar cell	Yes	No	No	No

As nouns, choanocyte and collar cell are synonyms defined as:

choanocyte and collar cell: any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum; they maintain a flow of water through the body

choanocyte (noun)	collar cell (noun)
any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum; they maintain a flow of water through the body	any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum; they maintain a flow of water through the body