ABOON and GABOON

To be ABOON is to be "above." It's an adjective from a "Scotch and British dialect."

If you add a G to the beginning of it, you get GABOON, which is "the soft, reddish-brown wood of an African tree" according to Dictionary.com, and a spittoon, according to The Dictionary. 

A SPITTOON, by the way, is a receptacle in which those folks who chew tobacco spit the juice.

They are both pluralized the same, with an S on the end, so GABOONS and SPITTOONS.