What's the type of art that they used in 2021?

Urban art is inspired by lifestyle and architecture. In 2021, it remains one of the most popular types of visual art worldwide. This contemporary form of art, which is often associated with street art and graffiti art, attracts thousands of people with its bold themes, diversity of colors, and profound meaning.

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.