preclusion vs obviation

preclusion and obviation both are nouns.

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

As nouns, preclusion and obviation are synonyms defined as:

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

Other synonyms of preclusion include forestalling.

preclusion (noun)	obviation (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