British spelling vs oesophagus

British spelling and oesophagus both are nouns.

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

British spelling (noun)	oesophagus (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the passage between the pharynx and the stomach