grommet vs grummet

grommet and grummet both are nouns.

Word	Noun	Adjective	Verb	Adverb
grommet	Yes	No	No	No
grummet	Yes	No	No	No

As nouns, grommet and grummet are synonyms defined as:

grommet and grummet: fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines

Other synonyms of grommet include cringle, eyelet, loop.

grommet (noun)	grummet (noun)
fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines	fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines