What do you call words that are spelled different but mean the same of which an example would be quire and choir?

Words that are spelled differently but have the same meaning are called homonyms.

While "quire" and "choir" are spelled differently, they are not homonyms because they have different meanings. "Quire" refers to a quantity of paper, while "choir" refers to a group of singers.

Here are some examples of true homonyms:

* To, too, two

* There, their, they're

* Hear, here

* Right, write

* See, sea