Australian spelling vs hypothesise

Australian spelling is a noun but hypothesise is not a noun.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
hypothesise	No	No	Yes	No

Australian spelling (noun)	hypothesise (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')

Australian spelling (verb)	hypothesise (verb)
	to believe especially on uncertain or tentative grounds