leukaemia vs Australian spelling

leukaemia and Australian spelling both are nouns.

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

leukaemia (noun)	Australian spelling (noun)
malignant neoplasm of blood-forming tissues; characterized by abnormal proliferation of leukocytes; one of the four major types of cancer	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')