anaesthesia vs British spelling

anaesthesia and British spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
anaesthesia	Yes	No	No	No
British spelling	Yes	No	No	No

anaesthesia (noun)	British spelling (noun)
loss of bodily sensation with or without loss of consciousness	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')