Difference between Attempted and Unsuccessful

Attempted

Part of speech: adjective

Definition: Tried, with the connotation of failure.

Part of speech: verb

Definition: To try.

Example sentence: If I've been an architect of my own career in any fashion, one thing that I've attempted to do is not get typecast, in order to be able to play all different kind of characters. I think I've done a pretty good job of that over the years.

Unsuccessful

Part of speech: adjective

Definition: Failed, not successful.

Example sentence: If you don't try your hardest, and you're unsuccessful, you always have that excuse.