Over here, the 'Crescent Wrench' is called an
adjustable spanner, which
is not a trade name. 'Vise Grips' anre normally called a 'Mole Wrench',
which certainy in a trade name, I think the generic term is 'self locking
pliers'.
In Brazil we call the crescent wrench the 'engineer tool' because most
of them are lazy to get the right tool :)
We also tend to call slip-joint pliers a 'water
pump wrench'. I have no
idea why.
Because the mouth of it opens waay larger than normal pliers, and water
pump locking pressure rings need a larger mouth to unlock it