What's the difference between sprains and strains?

Ligament vs tendon: In general, strains are injuries to a muscle or tendon. A tendon connects the muscle to bone. A sprain is an injury to a ligament. Ligaments connect one bone to another. Both can range from mild (like a stretch with mild injury and pain) to severe (complete tear that might need surgery). See your doctor if you have severe pain, weakness, instability, swelling or an injury that doesn't heal.

Tissue difference: A strain is a stretch injury of a muscle or tendon. A sprain is a stretch injury of a ligament. A ligament connects bone to bone. A tendon connects muscle to bone.

Similar, but diff: A sprain is an injury involving the stretching or tearing of a ligament or a joint capsule. Sprains occur when a joint is forced beyond its normal range of motion, such as turning or rolling your ankle. Strains are injuries that involve the stretching or tearing of muscle and/or tendon. Strains take place when a muscle is overstretched suddenly, such as pulling a hamstring.

Muscle vs ligament: Sprain is ligament injury, strain is muscle injury.