When we say this approach is “New,” new, here, doesn’t necessarily imply that the approach is different from preceding approaches.
When we say that it is “different,” different, here, doesn’t imply that it is new.
So is there an adjective or a word that could denote both meanings?
Here is the context:
to unravel ………. reasons and motivations.
novel – of a new kind; different from anything seen or known before (dictionary.com)