computer peripheral vs peripheral device

computer peripheral and peripheral device both are nouns.

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

As nouns, computer peripheral and peripheral device are synonyms defined as:

computer peripheral and peripheral device: electronic equipment external to the circuit board that contains the CPU of a computer

Other synonyms of computer peripheral include peripheral.

computer peripheral (noun)	peripheral device (noun)
electronic equipment external to the circuit board that contains the CPU of a computer	electronic equipment external to the circuit board that contains the CPU of a computer