What's the difference between bungler and dabster?

Bungler

Definition:

• (n.) A clumsy, awkward workman; one who bungles.

Example Sentences:

• (1) With Veep , rather than striving young idealists, you have cowardly egomaniacs and bunglers who are involved in endless arse-covering exercises.

Dabster

Definition:

• (n.) One who is skilled; a master of his business; a proficient; an adept.

Example Sentences: