forty winks vs catnap

forty winks and catnap both are nouns.

Word	Noun	Adjective	Verb	Adverb
forty winks	Yes	No	No	No
catnap	Yes	No	Yes	No

As nouns, forty winks and catnap are synonyms defined as:

forty winks and catnap: sleeping for a short period of time (usually not in bed)

Other synonyms of forty winks include light sleep, nap, short sleep, snooze.

forty winks (noun)	catnap (noun)
sleeping for a short period of time (usually not in bed)	sleeping for a short period of time (usually not in bed)

forty winks (verb)	catnap (verb)
	take a siesta