Forest
Part of speech: noun
Definition: A dense collection of trees covering a relatively large area. Larger than woods. Any dense collection or amount. A defined area of land formerly set aside in England as a royal hunting ground. a disjoint union of trees
Part of speech: verb
Definition: To cover an area with trees.
Forrest
Part of speech: proper noun
Definition: for someone who lived or worked in a Royal forest (area of woodland reserved for hunting)transferred from the surname.