Ruby, for one, is a term that can refer to both an ASSASSIN and a GEM. An ASSASSIN is an individual who is hired to kill someone, usually for political or financial gain. The term 'RUBY' is often used to refer to a professional ASSASSIN. A GEM is a precious stone, such as a diamond, sapphire, or RUBY. The term 'RUBY' is also used to refer to the red-colored gemstone. Dee is a three-letter word that can refer to many things, including a nickname for the name 'DIANA, ' a river in Scotland, or a type of bird.