pibroch vs martial music

pibroch and martial music both are nouns.

Word	Noun	Adjective	Verb	Adverb
pibroch	Yes	No	No	No
martial music	Yes	No	No	No

As nouns, martial music is a hypernym of pibroch; that is, martial music is a word with a broader meaning than pibroch:

pibroch: martial music with variations; to be played by bagpipes
martial music: brisk marching music suitable for troops marching in a military parade

Other hypernyms of pibroch include military march, military music.

pibroch (noun)	martial music (noun)
martial music with variations; to be played by bagpipes	brisk marching music suitable for troops marching in a military parade