What's the difference between guider and guiser?

Guider

Definition:

• (n.) A guide; a director.

Example Sentences:

• (1) TDs now going to *vote* on the change to the Dail schedule - meaning the announcement will be at about 11:37-ish November 14, 2013 Ian Guider (@ianguider) Sources telling me Ireland will exit bailout without back up credit line.

Guiser

Definition:

• (n.) A person in disguise; a masker; a mummer.

Example Sentences: