response: Not much,  but I know a few things.  For example, I know the guitar is a type of chordophone, traditionally constructed from wood and strung with either gut, nylon or steel string.
history: My friend plays the guitar, do you know much about guitars?
knowledge: The guitar is a type of chordophone, traditionally constructed from wood and strung with either gut, nylon or steel strings and distinguished from other chordophones by its construction and tuning.