British spelling vs vitreous humour

British spelling and vitreous humour both are nouns.

Word	Noun	Adjective	Verb	Adverb
British spelling	Yes	No	No	No
vitreous humour	Yes	No	No	No

British spelling (noun)	vitreous humour (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the clear colorless transparent jelly that fills the posterior chamber of the eyeball