Tetrahydrocannabinol (THC)
People use the words “sprain” and “strain” almost interchangeably, to describe everything from a twisted ankle to a pulled hamstring. But they're not the same. A sprain is a stretch or tear in a ligament. Ligaments are bands of fibrous tissue that connect bones to bones at joints.
It may be either Disagreements or Intractable Situations. I'm not completely sure, sorry. I'd wait for another to come answer your question just to be safe.
Is it a multiple choice question?