forestall vs prevent

forestall and prevent both are verbs.

Word	Noun	Adjective	Verb	Adverb
forestall	No	No	Yes	No
prevent	No	No	Yes	No

As verbs, forestall and prevent are synonyms defined as:

Other synonyms of forestall include forbid, foreclose, preclude.

forestall (verb)	prevent (verb)
act in advance of; deal with ahead of time	stop (someone or something) from doing something or being in a certain state
keep from happening or arising; make impossible	keep from happening or arising; make impossible