7.You can judge art using just aesthetic theory or more than one, depending of the type of art and your own purposes. Immersive Reader

You can judge art using just one aesthetic theory or more than one

your word would be isle.

isle is an island or peninsula especially a small one.

if you add the letter "a" you get aisle, which is a passage between 2 rows of something like chairs, shelves, or something else.