martial music vs military march

martial music and military march both are nouns.

Word	Noun	Adjective	Verb	Adverb
martial music	Yes	No	No	No
military march	Yes	No	No	No

As nouns, martial music and military march are synonyms defined as:

martial music and military march: brisk marching music suitable for troops marching in a military parade

Other synonyms of martial music include military music.

martial music (noun)	military march (noun)
brisk marching music suitable for troops marching in a military parade	brisk marching music suitable for troops marching in a military parade