A GARNER was originally a granary, and to garner something is to gather it in. Today the word rarely has to do with agriculture: we garner attention, praise, awards, evidence, and sympathy.
To garnish something is to decorate it. You can garnish a lamb chop by placing a sprig of rosemary next to it. Quite a few people use “garnish” when they should be using “garner.”
In standard English “genius” is a noun, but not an adjective. In slang, people often say things like “Telling Mom your English teacher is requiring the class to get wifi was genius!” The
“The jig is up” is an old slang expression meaning “the game is over--we’re caught.” A musician’s job is a gig.
You gild an object by covering it with gold; you can join an organisation like the Directors’ Guild.