marching vs quick march

marching and quick march both are nouns.

Word	Noun	Adjective	Verb	Adverb
marching	Yes	No	No	No
quick march	Yes	No	No	No

As nouns, quick march is a hyponym of marching; that is, quick march is a word with a more specific, narrower meaning than marching:

marching: the act of marching; walking with regular steps (especially in a procession of some kind)
quick march: marching at quick time

Other hyponyms of marching include countermarch, goose step, lockstep, promenade, routemarch.

marching (noun)	quick march (noun)
the act of marching; walking with regular steps (especially in a procession of some kind)	marching at quick time