* Strand: A single piece of hair.
* Lock: A small, thick bunch of hair.
* Tangle: A knot of hair.
* Patch: A small area of hair.
* Length: The length of hair.
* Amount: A general measurement of how much hair there is.
For example:
* "I found a strand of hair in my soup."
* "She has beautiful locks of hair."
* "He had a tangle of hair in his beard."
* "He lost a patch of hair after the accident."
* "She has long hair."
* "There was a great amount of hair on the floor after the haircut."