What's the difference between Condescend and Corrupt?

What's the difference between Sketch and Portray?

What's the difference between Trace and Track?

What's the difference between Undergo and Suffer?

What's the difference between Stroke; Strike and Beat?

I got some words comparison questions, could somebody please help to answer it? Tks in advance. What's the difference between Famous; Renowned and Prestigious? What's the difference between Therapy and Remedy? What's the difference between Sculpture and Carve? What's the difference between Cure and Heal? What's the difference between Cuisine and Recipe? What's the difference between Rival and Opponent?

What's the difference between Woods and Forest?

What's the difference between Ethnic and Racial?

I knew that Journal is same as Diary, but what's the tiny difference that you can express?