specialise vs Australian spelling

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

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

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

specialise (verb)	Australian spelling (verb)
become more focused on an area of activity or field of study
suit to a special purpose
evolve so as to lead to a new species or develop in a way most suited to the environment
be specific about
devote oneself to a special area of work