sex vs maiden

sex and maiden both are nouns.

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

sex (noun)	maiden (noun)
activities associated with sexual intercourse	an unmarried girl (especially a virgin)
the properties that distinguish organisms on the basis of their reproductive roles	(cricket) an over in which no runs are scored
all of the feelings resulting from the urge to gratify sexual impulses
either of the two categories (male or female) into which most organisms are divided

sex (adjective)	maiden (adjective)
	serving to set in motion

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