Nevertheless there are none different (3,3,4)
I believe the answer is:
all the same
'nevertheless' is the definition.
(synonyms)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for all the same that I've seen before include "everyone is in uniform" , "in spite of this" , "still > unimportant" , "Despite anything to the contrary" , "anyway" .)