cone cell vs visual cell

cone cell and visual cell both are nouns.

Word	Noun	Adjective	Verb	Adverb
cone cell	Yes	No	No	No
visual cell	Yes	No	No	No

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

cone cell: a visual receptor cell in the retina that is sensitive to bright light and to color
visual cell: one of the cells of the retina that is sensitive to light

cone cell (noun)	visual cell (noun)
a visual receptor cell in the retina that is sensitive to bright light and to color	one of the cells of the retina that is sensitive to light