spiel vs bugle

spiel and bugle both are nouns.

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

As verbs, bugle is a hyponym of spiel; that is, bugle is a word with a more specific, narrower meaning than spiel:

spiel (noun)	bugle (noun)
plausible glib talk (especially useful to a salesperson)	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

spiel (verb)	bugle (verb)
speak at great length (about something)	play on a bugle
replay (as a melody)