spot pass vs passing play

spot pass and passing play both are nouns.

Word	Noun	Adjective	Verb	Adverb
spot pass	Yes	No	No	No
passing play	Yes	No	No	No

As nouns, passing play is a hypernym of spot pass; that is, passing play is a word with a broader meaning than spot pass:

spot pass: a pass to a designated spot on the field; the receiver should arrive at that spot the same time the ball does
passing play: (American football) a play that involves one player throwing the ball to a teammate

Other hypernyms of spot pass include pass, passing, passing game.

spot pass (noun)	passing play (noun)
a pass to a designated spot on the field; the receiver should arrive at that spot the same time the ball does	(American football) a play that involves one player throwing the ball to a teammate