Pre-historic era characteristic

The Upper Paleolithic period witnessed the beginning of fine art, featuring drawing, modelling, sculpture, and painting, as well as jewellery, personal adornments and early forms of music and dance. The three main art forms were cave painting, rock engraving and miniature figurative carvings.

Explanation:

Not 100% sure of this was what you were asking or not.

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.