sex vs impropriety

sex and impropriety both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex	Yes	No	Yes	No
impropriety	Yes	No	No	No

sex (noun)	impropriety (noun)
activities associated with sexual intercourse	an act of undue intimacy
the properties that distinguish organisms on the basis of their reproductive roles	an indecent or improper act
all of the feelings resulting from the urge to gratify sexual impulses	an improper demeanor
either of the two categories (male or female) into which most organisms are divided	the condition of being improper

sex (verb)	impropriety (verb)
tell the sex (of young chickens)
to evoke sexual feelings