Hz vs cps

Hz and cps both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hz	Yes	No	No	No
cps	Yes	No	No	No

As nouns, Hz and cps are synonyms defined as:

Hz and cps: the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)

Other synonyms of Hz include cycle, cycle per second, cycles/second, hertz.

Hz (noun)	cps (noun)
the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)	the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)