Grin.
Way too broad of a question, many instruments are in/can be in G.
gloomy
gravel
gloomy
Gondola is a type of boat. It begins with the letter g.
gelidity
gorgeous
gayest
Gratified, gleeful, gay, glad
g Yes willows do have broad leafs
Peter G. Broad has written: 'El ojo en la sombra' -- subject(s): Criticism and interpretation
A mood starting with G is generous.