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"Vayan" is a form of "vayan", a phrase which is often translated as "go". "Vallan" is a form of "vallar", a transitive verb which is often translated as "to fence in". Learn more about the difference between "vayan" and "vallan" below.
vayan
A phrase is a group of words commonly used together (e.g., once upon a time).
vallar(
bah
-
yahr
)A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
1. (general)
a. to fence in
El granjero valló el área donde está el gallinero.The farmer fenced in the area where the chicken coop is.
b. to put a fence around
Vallé la huerta para que los perros no se acerquen a las plantas.I put a fence around the orchard to keep the dogs away from the plants.