presumption vs given

presumption and given both are nouns.

Word	Noun	Adjective	Verb	Adverb
presumption	Yes	No	No	No
given	Yes	Yes	No	No

As nouns, presumption and given are synonyms defined as:

Other synonyms of presumption include precondition.

presumption (noun)	given (noun)
a kind of discourtesy in the form of an act of presuming	an assumption that is taken for granted
audacious (even arrogant) behavior that you have no right to
an assumption that is taken for granted
(law) an inference of the truth of a fact from other facts proved or admitted or judicially noticed

presumption (adjective)	given (adjective)
	acknowledged as a supposition
	(usually followed by `to') naturally disposed toward