What do the parts of the image above represent?

Explanation:

Navigational maps, commonly known as "stick charts," were originally used in the Marshall Islands by navigators during long ocean voyages. Although stylized, the charts were functional objects providing information on the locations of individual islands as well as wave patterns.

he wrote 23 poems and produced 300-500 songs

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.