What's the difference between frounce and frounced?

Frounce

Definition:

(v. i.) To gather into or adorn with plaits, as a dress; to form wrinkles in or upon; to curl or frizzle, as the hair.
(v. i.) To form wrinkles in the forehead; to manifest displeasure; to frown.
(n.) A wrinkle, plait, or curl; a flounce; -- also, a frown.
(n.) An affection in hawks, in which white spittle gathers about the hawk's bill.

Example Sentences: