presumptive vs probable

presumptive is not a noun while probable is a noun.

Word	Noun	Adjective	Verb	Adverb
presumptive	No	Yes	No	No
probable	Yes	Yes	No	No

presumptive (noun)	probable (noun)
	an applicant likely to be chosen

presumptive (adjective)	probable (adjective)
affording reasonable grounds for belief or acceptance	likely but not certain to be or become true or real
having a reasonable basis for belief or acceptance	apparently destined