variation (variations plural )
1 n-count A variation on something is the same thing presented in a slightly different form.
usu N on n
This delicious variation on an omelette is quick and easy to prepare...
2 n-var A variation is a change or slight difference in a level, amount, or quantity.
The survey found a wide variation in the prices charged for canteen food..., Every day without variation my grandfather ate a plate of cold ham.