haphazard vs sexual activity

haphazard is not a noun while sexual activity is a noun.

Word	Noun	Adjective	Verb	Adverb
haphazard	No	Yes	No	Yes
sexual activity	Yes	No	No	No

haphazard (noun)	sexual activity (noun)
	activities associated with sexual intercourse

haphazard (adjective)	sexual activity (adjective)
marked by great carelessness
dependent upon or characterized by chance

haphazard (adverb)	sexual activity (adverb)
without care; in a slapdash manner