premiss vs premise

premiss and premise both are nouns.

Word	Noun	Adjective	Verb	Adverb
premiss	Yes	No	Yes	No
premise	Yes	No	Yes	No

As nouns, premiss and premise are synonyms defined as:

premiss and premise: a statement that is assumed to be true and from which a conclusion can be drawn

Other synonyms of premiss include assumption.

As verbs, premiss and premise are synonyms defined as:

premiss (noun)	premise (noun)
a statement that is assumed to be true and from which a conclusion can be drawn	a statement that is assumed to be true and from which a conclusion can be drawn

premiss (verb)	premise (verb)
take something as preexisting and given	take something as preexisting and given
	set forth beforehand, often as an explanation
	furnish with a preface or introduction