stipulation vs proviso

stipulation and proviso both are nouns.

Word	Noun	Adjective	Verb	Adverb
stipulation	Yes	No	No	No
proviso	Yes	No	No	No

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

stipulation: an assumption on which rests the validity or effect of something else
proviso: a stipulated condition

Other hyponyms of stipulation include boundary condition, provision.

stipulation (noun)	proviso (noun)
a restriction that is insisted upon as a condition for an agreement	a stipulated condition
an assumption on which rests the validity or effect of something else
(law) an agreement or concession made by parties in a judicial proceeding (or by their attorneys) relating to the business before the court; must be in writing unless they are part of the court record