goitre vs Australian spelling

goitre and Australian spelling both are nouns.

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

goitre (noun)	Australian spelling (noun)
abnormally enlarged thyroid gland; can result from underproduction or overproduction of hormone or from a deficiency of iodine in the diet	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')