sleeping around vs promiscuousness

sleeping around and promiscuousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
sleeping around	Yes	No	No	No
promiscuousness	Yes	No	No	No

As nouns, sleeping around and promiscuousness are synonyms defined as:

sleeping around and promiscuousness: indulging in promiscuous (casual and indiscriminate) sexual relations

Other synonyms of sleeping around include promiscuity.

sleeping around (noun)	promiscuousness (noun)
indulging in promiscuous (casual and indiscriminate) sexual relations	indulging in promiscuous (casual and indiscriminate) sexual relations