touchback vs football play

touchback and football play both are nouns.

Word	Noun	Adjective	Verb	Adverb
touchback	Yes	No	No	No
football play	Yes	No	No	No

As nouns, football play is a hypernym of touchback; that is, football play is a word with a broader meaning than touchback:

touchback: (American football) a play in which the opposing team has kicked the football into your end zone
football play: (American football) a play by the offensive team

touchback (noun)	football play (noun)
(American football) a play in which the opposing team has kicked the football into your end zone	(American football) a play by the offensive team