sex vs bisexual person

sex and bisexual person both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex	Yes	No	Yes	No
bisexual person	Yes	No	No	No

sex (noun)	bisexual person (noun)
activities associated with sexual intercourse	a person who is sexually attracted to both sexes
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)	bisexual person (verb)
tell the sex (of young chickens)
to evoke sexual feelings