specialisation vs Australian spelling

specialisation and Australian spelling both are nouns.

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

specialisation (noun)	Australian spelling (noun)
the special line of work you have adopted as your career	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')
the act of specializing; making something suitable for a special purpose
(biology) the structural adaptation of some body part for a particular function