but / different
The signs "but" and "different" are basically the same sign. The sign "but" generally uses a "smaller" movement, however, it may be done quite large depending on how excited the signer is.
BUT:
BUT or DIFFERENT:
The sign for "but" is (in general) the same as the sign for "different." However, I suggest that the sign for "different" uses a larger motion (in general) than the sign for "but."
but or "DIFFERENT"
Very different:
Animations:
but