Types of strings
Treble Gut: Used for high and mid-range strings of  most small instruments.

Lyon Gut: Used for top strings on larger instruments like cellos and basses, mid-range and low strings on other instruments.

Pistoy Gut: Used for mid-range and low strings on most instruments.

Wound Strings: Used for low strings on most instruments.

Gimped strings: Used for mid-range and low strings on most instruments.

Diapason Gut: Is long lengths of gut for archlutes, theorbos, etc.

Gimped Diapasons: Are long gimped strings for archlutes, theorbos, etc.