INSTRUMENTS

A device that requires skill for proper use

The means whereby some act is accomplished

Example: "My greed was the instrument of my destruction"

A person used by another to gain an end

(law) a document that states some contractual relationship or grants some right

The semantic role of the entity (usually inanimate) that the agent uses to perform an action or start a process

Any of various devices or contrivances that can be used to produce musical tones or sounds