Hello, 

I am quite new to this, but mostly I got the tag from here : 
https://taginfo.openstreetmap.org/keys/amenity#values and culture 

From a first perspective, culture_center seems to be much more used than the British version and than cultural_centre.

How would you proceed in such cases (not knowing what to use at first glance), and why do you favor the British writing ?

Thank you for your time,

Olivier