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forest vs rainforest rainforest vs forest

forest and rainforest both are nouns.

forest is a verb but rainforest is not a verb.

As nouns, rainforest is a hyponym of forest; that is, rainforest is a word with a more specific, narrower meaning than forest and rainforest is a type of forest with the definitions:
  • the trees and other plants in a large densely wooded area
forest (noun) rainforest (noun)
the trees and other plants in a large densely wooded area a forest with heavy annual rainfall
land that is covered with trees and shrubs
forest (verb) rainforest (verb)
establish a forest on previously unforested land