Creed, given converts, shows difference (10)
I believe the answer is:
divergence
'difference' is the definition.
(divergence is a kind of difference)
'creed given converts' is the wordplay.
'converts' indicates an anagram.
'creed'+'given'='creedgiven'
'creedgiven' anagrammed gives 'DIVERGENCE'.
'shows' is the link.
(Other definitions for divergence that I've seen before include "departure" , "A moving apart" , "being different" .)