Tell about tale being different (6)
I believe the answer is:
relate
'tell' is the definition.
(as in to tell or relate a story)
'about tale being different' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'being different' indicates an anagram (letters placed in a different order).
'tale' anagrammed gives 'late'.
're'+'late'='RELATE'
(Other definitions for relate that I've seen before include "Do well; wave about" , "Narrate or associate" , "Show a connection between (things)" , "link" , "Tell (a story)" .)