precondition vs assumption

precondition and assumption both are nouns.

Word	Noun	Adjective	Verb	Adverb
precondition	Yes	No	Yes	No
assumption	Yes	No	No	No

As nouns, assumption is a hypernym of precondition; that is, assumption is a word with a broader meaning than precondition:

Other hypernyms of precondition include supposal, supposition.

As nouns, assumption is a hypernym of precondition; that is, assumption is a word with a broader meaning than precondition:

precondition: an assumption on which rests the validity or effect of something else
assumption: a statement that is assumed to be true and from which a conclusion can be drawn

Other hypernyms of precondition include premise, premiss.

precondition (noun)	assumption (noun)
a condition that is a prerequisite	the act of taking possession of or power over something
an assumption that is taken for granted	the act of assuming or taking for granted
an assumption on which rests the validity or effect of something else	audacious (even arrogant) behavior that you have no right to
	a hypothesis that is taken for granted
	a statement that is assumed to be true and from which a conclusion can be drawn

precondition (verb)	assumption (verb)
put into the required condition beforehand