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forest vs rain forest rain forest vs forest

forest and rain forest both are nouns.

forest is a verb but rain forest is not a verb.

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