As nouns the difference between grommet and garland
is that
grommet is a reinforced eyelet, or a small metal or plastic ring used to reinforce an eyelet while
garland is a wreath, especially one of plaited flowers or leaves, worn on the body or draped as a decoration.
As verbs the difference between grommet and garland
is that
grommet is to insert a grommet into while
garland is to deck or ornament something with a garland.