'variation' aparece también en las siguientes entradas:
In the English description:
ballad meter
- change
- cline
- constantly
- dialect
- dialect geography
- difference
- flat
- fluctuation
- jitter
- local dialect
- monotonously
- mutation
- pibroch
- polymorphism
- shinty
- sirrah
- skimboarding
- target range
- tidal range
Spanish: