electronic computer vs peripheral

electronic computer and peripheral both are nouns.

Word	Noun	Adjective	Verb	Adverb
electronic computer	Yes	No	No	No
peripheral	Yes	Yes	No	No

electronic computer (noun)	peripheral (noun)
a machine for performing calculations automatically	electronic equipment external to the circuit board that contains the CPU of a computer

electronic computer (adjective)	peripheral (adjective)
	on or near an edge or constituting an outer boundary; the outer area
	related to the key issue but not of central importance