nerve centre vs British spelling

nerve centre and British spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
nerve centre	Yes	No	No	No
British spelling	Yes	No	No	No

nerve centre (noun)	British spelling (noun)
a cluster of nerve cells governing a specific bodily process	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')
a center that provides information and control