Golf
Well there are many type of sand use to build sand trap some uses imported sand which play better and drain faster but it cost a lot than local sand which has larger granules which is really not ideal.
Greensend rock does not exist. You are thinking of greensAnd rock - a sand or sediment having a dark greenish colour caused by the presence of glauconite. It can be fossil - rich.
what sport do you use a sand wedge <><><> Golf- when your ball lands in a sand trap.
A "sand wedge" is used in the sport of golf.
GolF
a round sand ball
A "sand Iron" is a golf club (iron) designed to hit a golf ball out of a sand trap or bunker.
Green sand is a type of sand that has been mixed with clay and water to create a molding material used in foundries for casting metals. It gets its name from the greenish color it takes on due to the presence of water and organic material. Green sand is reusable and commonly used in the production of metal castings.
Some hunt it for cloathing, or even for sport.
Tennis
sand and paint them
Beach Volleyball.