Is Frozen Shoulder A Kind Of Osteoarthritis Shoulder Pain?

Shoulder pain? - is frozen shoulder a kind of osteoarthritis

My husband has a bad shoulder, kind of sounded like the click in his place and is no longer the same since ... refuses to go to the doctor believes that a ibruphen as usual. He says he feels like the bones or joints, muscles, but ... Can anyone recommend something that ibruphen or Deep Heat / Freezing and analgesics to relieve him (which has already tried this) I would be grateful for any help, I thank you in advance