pregnancy vs sex

pregnancy and sex both are nouns.

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

pregnancy (noun)	sex (noun)
the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus	activities associated with sexual intercourse
	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

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