British spelling vs titbit

British spelling and titbit both are nouns.

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

British spelling (noun)	titbit (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	a small tasty bit of food