bombard vs bombardon

bombard and bombardon both are nouns.

Word	Noun	Adjective	Verb	Adverb
bombard	Yes	No	Yes	No
bombardon	Yes	No	No	No

As nouns, bombard and bombardon are synonyms defined as:

bombard and bombardon: a large shawm; the bass member of the shawm family

bombard (noun)	bombardon (noun)
a large shawm; the bass member of the shawm family	a large shawm; the bass member of the shawm family
	a tuba that coils over the shoulder of the musician

bombard (verb)	bombardon (verb)
direct high energy particles or radiation against
address with continuously or persistently, as if with a barrage
throw bombs at or attack with bombs
cast, hurl, or throw repeatedly with some missile