collar cell vs flagellated cell

collar cell and flagellated cell both are nouns.

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

As nouns, flagellated cell is a hypernym of collar cell; that is, flagellated cell is a word with a broader meaning than collar cell:

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
flagellated cell: any cell or one-celled organism equipped with a flagellum

collar cell (noun)	flagellated 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 cell or one-celled organism equipped with a flagellum