centile vs percentile

centile and percentile both are nouns.

Word	Noun	Adjective	Verb	Adverb
centile	Yes	No	No	No
percentile	Yes	No	No	No

As nouns, centile and percentile are synonyms defined as:

centile and percentile: (statistics) any of the 99 numbered points that divide an ordered set of scores into 100 parts each of which contains one-hundredth of the total

centile (noun)	percentile (noun)
(statistics) any of the 99 numbered points that divide an ordered set of scores into 100 parts each of which contains one-hundredth of the total	(statistics) any of the 99 numbered points that divide an ordered set of scores into 100 parts each of which contains one-hundredth of the total