sex vs blue story

sex and blue story both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex	Yes	No	Yes	No
blue story	Yes	No	No	No

sex (noun)	blue story (noun)
activities associated with sexual intercourse	an indelicate joke
the properties that distinguish organisms on the basis of their reproductive roles
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 (verb)	blue story (verb)
tell the sex (of young chickens)
to evoke sexual feelings