What's the difference between thalia and thulia?

Thalia

Definition:

• (n.) That one of the nine Muses who presided over comedy.
• (n.) One of the three Graces.
• (n.) One of the Nereids.

Example Sentences:

• (1) They even got inspired: Thalia (@tatnat123) I voted because of Lil Jon.

Thulia

Definition:

• (n.) Oxide of thulium.

Example Sentences: