two-timing vs sexual practice

two-timing is not a noun while sexual practice is a noun.

Word	Noun	Adjective	Verb	Adverb
two-timing	No	Yes	No	No
sexual practice	Yes	No	No	No

two-timing (noun)	sexual practice (noun)
	activities associated with sexual intercourse

two-timing (adjective)	sexual practice (adjective)
not faithful to a spouse or lover