pyramid bugle vs bugle

pyramid bugle and bugle both are nouns.

Word	Noun	Adjective	Verb	Adverb
pyramid bugle	Yes	No	No	No
bugle	Yes	No	Yes	No

As nouns, bugle is a hypernym of pyramid bugle; that is, bugle is a word with a broader meaning than pyramid bugle:

pyramid bugle: European evergreen carpeting perennial
bugle: any of various low-growing annual or perennial evergreen herbs native to Eurasia; used for ground cover

Other hypernyms of pyramid bugle include bugleweed.

pyramid bugle (noun)	bugle (noun)
European evergreen carpeting perennial	a brass instrument without valves; used for military calls and fanfares
	a tubular glass or plastic bead sewn onto clothing for decoration
	any of various low-growing annual or perennial evergreen herbs native to Eurasia; used for ground cover

pyramid bugle (verb)	bugle (verb)
	play on a bugle