preclude vs forestall

preclude and forestall both are verbs.

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

As verbs, preclude and forestall are synonyms defined as:

Other synonyms of preclude include forbid, foreclose, prevent.

preclude (verb)	forestall (verb)
keep from happening or arising; make impossible	act in advance of; deal with ahead of time
make impossible, especially beforehand	keep from happening or arising; make impossible