sloppy vs sex activity

sloppy is not a noun while sex activity is a noun.

Word	Noun	Adjective	Verb	Adverb
sloppy	No	Yes	No	No
sex activity	Yes	No	No	No

sloppy (noun)	sex activity (noun)
	activities associated with sexual intercourse

sloppy (adjective)	sex activity (adjective)
marked by great carelessness
excessively or abnormally emotional
not fitting closely; hanging loosely
lacking neatness or order
(of soil) soft and watery
wet or smeared with a spilled liquid or moist material