This icon is shaped like a tree. There are two curved lines for the trunk and a curved and bubbly shape for the bushy leaves at the very top of the tree image.
This Oak Tree icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,000 icons, all in the same style and quality.