isomerise vs Australian spelling

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

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

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

isomerise (verb)	Australian spelling (verb)
change into an isomer
cause to change into an isomer