Yeah

Uh yeah

Geology is the study of the ground composition.

Geography is maping the ground.

Geology is rocks and geography is locations

Yes, and I'm not good at either one.

One ends with Y and the other ends with Y

Oh yes, been instructed about that many a time.

One of about what the rocks are made of, the other is about where they may be found ...

Ones has geodes and the other has hoes

Sorry, I'm a child and felt the compulsion to rhyme-ish