backstop vs softball game

backstop and softball game both are nouns.

Word	Noun	Adjective	Verb	Adverb
backstop	Yes	No	Yes	No
softball game	Yes	No	No	No

backstop (noun)	softball game (noun)
a precaution in case of an emergency	a game closely resembling baseball that is played on a smaller diamond and with a ball that is larger
(baseball) a fence or screen (as behind home plate) to prevent the ball from traveling out of the playing field
(baseball) the person who plays the position of catcher

backstop (verb)	softball game (verb)
act as a backstop