printer vs computer peripheral

printer and computer peripheral both are nouns.

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

As nouns, computer peripheral is a hypernym of printer; that is, computer peripheral is a word with a broader meaning than printer:

printer: (computer science) an output device that prints the results of data processing
computer peripheral: electronic equipment external to the circuit board that contains the CPU of a computer

Other hypernyms of printer include peripheral, peripheral device, printer, printing machine.

printer (noun)	computer peripheral (noun)
a machine that prints	electronic equipment external to the circuit board that contains the CPU of a computer
(computer science) an output device that prints the results of data processing
someone whose occupation is printing