electric eye vs photoelectric cell

electric eye and photoelectric cell both are nouns.

Word	Noun	Adjective	Verb	Adverb
electric eye	Yes	No	No	No
photoelectric cell	Yes	No	No	No

As nouns, electric eye and photoelectric cell are synonyms defined as:

electric eye and photoelectric cell: a transducer used to detect and measure light and other radiations

Other synonyms of electric eye include magic eye, photocell, photoconductive cell.

electric eye (noun)	photoelectric cell (noun)
a transducer used to detect and measure light and other radiations	a transducer used to detect and measure light and other radiations