A drum set is the combination of percussion instruments such as bass drum, snare drum, hi-hat, cymbals, etc. used by a drummer. There are synonyms for the word drum set, and these include drum kit, drum package, drum set up, percussion set, and trap set. Each of these synonyms describes the same arrangement of musical instruments. The word "drum kit" is perhaps the most common alternative to "drum set" and often used interchangeably. A "percussion set" highlights the presence of other percussion instruments in addition to the drums. "Drum package" or "drum set up" refers to the assembly of the drum set, while "trap set" is an older term that was used to describe drum sets when they contained more percussive traps, such as cowbells and woodblocks, than they do today.