British spelling vs modeller

British spelling and modeller both are nouns.

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

British spelling (noun)	modeller (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	a person who creates models