printer vs peripheral

printer and peripheral both are nouns.

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

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

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

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

printer (noun)	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

printer (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