running play vs end run

running play and end run both are nouns.

Word	Noun	Adjective	Verb	Adverb
running play	Yes	No	No	No
end run	Yes	No	No	No

As nouns, end run is a hyponym of running play; that is, end run is a word with a more specific, narrower meaning than running play:

running play: (American football) a play in which a player attempts to carry the ball through or past the opposing team
end run: (American football) an attempt to advance the ball by running around the end of the line

Other hyponyms of running play include draw, draw play, sweep, return, reverse, rush, rushing.

running play (noun)	end run (noun)
(American football) a play in which a player attempts to carry the ball through or past the opposing team	(American football) an attempt to advance the ball by running around the end of the line