obviation vs forestalling

obviation and forestalling both are nouns.

Word	Noun	Adjective	Verb	Adverb
obviation	Yes	No	No	No
forestalling	Yes	No	No	No

As nouns, obviation and forestalling are synonyms defined as:

obviation and forestalling: the act of preventing something by anticipating and disposing of it effectively

Other synonyms of obviation include preclusion.

obviation (noun)	forestalling (noun)
the act of preventing something by anticipating and disposing of it effectively	the act of preventing something by anticipating and disposing of it effectively