Please let me know if there is a difference between bursitis and a bunion?

Inflammation/bone. Bursitis describes inflammation of a bursae which is a "cushion" of soft tissue adjacent to a bone. There are several bursas in the body including the elbow, hip, heel, etc. Bunion describes a bony bump typically at the 1st metatarophalangeal joint (near the big toe).
Bunion . Is a bump of bone. Bursitis, is inflammation of a soft tissue structure that overlies a bone.