What's the difference between grum and grume?

Grum

Definition:

• (a.) Morose; severe of countenance; sour; surly; glum; grim.
• (a.) Low; deep in the throat; guttural; rumbling; as,

Example Sentences:

• (1) She has projects lined up with many of the new exponents of disco, including Goldroom , Grum and Mighty Mouse .

Grume

Definition:

• (n.) A thick, viscid fluid; a clot, as of blood.

Example Sentences: