cone cell vs retinal cone

cone cell and retinal cone both are nouns.

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

As nouns, cone cell and retinal cone are synonyms defined as:

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

Other synonyms of cone cell include cone.

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