centre of flotation vs center of flotation

centre of flotation and center of flotation both are nouns.

Word	Noun	Adjective	Verb	Adverb
centre of flotation	Yes	No	No	No
center of flotation	Yes	No	No	No

As nouns, centre of flotation and center of flotation are synonyms defined as:

centre of flotation and center of flotation: the center of gravity of a floating object

centre of flotation (noun)	center of flotation (noun)
the center of gravity of a floating object	the center of gravity of a floating object