photocell vs magic eye

photocell and magic eye both are nouns.

Word	Noun	Adjective	Verb	Adverb
photocell	Yes	No	No	No
magic eye	Yes	No	No	No

As nouns, photocell and magic eye are synonyms defined as:

photocell and magic eye: a transducer used to detect and measure light and other radiations

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

photocell (noun)	magic eye (noun)
a transducer used to detect and measure light and other radiations	a transducer used to detect and measure light and other radiations