forest vs bosk

forest and bosk both are nouns.

As nouns, bosk is a hyponym of forest; that is, bosk is a word with a more specific, narrower meaning than forest:

Other hyponyms of forest include grove, jungle, rain forest, rainforest, monsoon forest, deciduous forest, old growth, virgin forest, second growth.

forest (noun)	bosk (noun)
the trees and other plants in a large densely wooded area	a small wooded area
land that is covered with trees and shrubs

forest (verb)	bosk (verb)
establish a forest on previously unforested land