yellow ochre vs British spelling

yellow ochre and British spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow ochre	Yes	No	No	No
British spelling	Yes	No	No	No

yellow ochre (noun)	British spelling (noun)
pigment consisting of a limonite mixed with clay and silica	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')