sexual activity vs safety

sexual activity and safety both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual activity	Yes	No	No	No
safety	Yes	No	No	No

sexual activity (noun)	safety (noun)
activities associated with sexual intercourse	(baseball) the successful act of striking a baseball in such a way that the batter reaches base safely
	a score in American football; a player is tackled behind his own goal line
	a device designed to prevent injury or accidents
	contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse
	a safe place
	the state of being certain that adverse effects will not be caused by some agent under defined conditions