Trees

Trees has more than one meaning:

Trees (poem), a poem by Joyce Kilmer
TreePeople, an environmental nonprofit based in Los Angeles
Slang for cannabis
Trees (song), a song by Marty Casey & Lovehammers (Sometimes just Lovehammers)
In computer science, a tree data structure is a widely-used computer data structure that emulates a tree structure with a set of linked nodes.

For further meanings, see Tree (disambiguation).