safety vs American football

safety and American football both are nouns.

Word	Noun	Adjective	Verb	Adverb
safety	Yes	No	No	No
American football	Yes	No	No	No

safety (noun)	American football (noun)
(baseball) the successful act of striking a baseball in such a way that the batter reaches base safely	a game played by two teams of 11 players on a rectangular field 100 yards long; teams try to get possession of the ball and advance it across the opponents goal line in a series of (running or passing) plays
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