What's the difference between dabber and dobber?

Dabber

Definition:

• (n.) That with which one dabs; hence, a pad or other device used by printers, engravers, etc., as for dabbing type or engraved plates with ink.

Example Sentences:

Dobber

Definition:

• (n.) See Dabchick.
• (n.) A float to a fishing line.

Example Sentences: