Help with Pottery Vase: Japanese or Chinese, Era, Keywords?

Hello Everyone!

Hoping someone can help me with this 14" tall by about 6 1/2' wide vase. Would this be considered Celadon? Has an all over crazing, no visible seams, and signed on the bottom. Anyone know what the characters are saying? Would like to know more about it and need some keywords to narrow down my search. Thanks!

 

Darn, cannot figure how to make full size pics within, instead of attachments; like I used to...

Aha! Got them in, but now the pics are before the text.

Anyhow, you get my drift, right?

 

Yes, Korean celadon. You can probably find more with an image search with less stuff in the background.

 

Thank you Janet, that really helped!

Does anyone know what is the leaf design is called?

And the form of the vase? Is it considered fluted at the top? Thank you.

 

Spoke to a friend and her Korean friend says the signature is not Korean. But it definitely looks like a Korean Celadon vase to me.
Anyone here know how to read the signature? Thanks again.