picture element vs pixel

picture element and pixel both are nouns.

Word	Noun	Adjective	Verb	Adverb
picture element	Yes	No	No	No
pixel	Yes	No	No	No

As nouns, picture element and pixel are synonyms defined as:

picture element and pixel: (computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored dot)

Other synonyms of picture element include pel.

picture element (noun)	pixel (noun)
(computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored dot)	(computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored dot)