sermonise vs Australian spelling

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

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

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

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