tompion vs tampion

tompion and tampion both are nouns.

Word	Noun	Adjective	Verb	Adverb
tompion	Yes	No	No	No
tampion	Yes	No	No	No

As nouns, tompion and tampion are synonyms defined as:

tompion and tampion: plug for the muzzle of a gun to keep out dust and moisture

tompion (noun)	tampion (noun)
plug for the muzzle of a gun to keep out dust and moisture	plug for the muzzle of a gun to keep out dust and moisture