Australian spelling vs sermonise

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

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

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

Australian spelling (verb)	sermonise (verb)
	speak as if delivering a sermon; express moral judgements