What's the difference between don and mummer?

Don

Definition:

• (n.) Sir; Mr; Signior; -- a title in Spain, formerly given to noblemen and gentlemen only, but now common to all classes.
• (n.) A grand personage, or one making pretension to consequence; especially, the head of a college, or one of the fellows at the English universities.
• (v. t.) To put on; to dress in; to invest one's self with.

Example Sentences:

Mummer

Definition:

• (n.) One who mumms, or makes diversion in disguise; a masker; a buffon.

Example Sentences:

• (1) He managed to stay for five years, founded The Mummers, the first university drama group to admit women, and edited Granta.