Dictionary says both mean "gate". I want to know if there is any finer difference between the two, especially regional ones. What's the word you use for gate in your regions? More specifically I would like to know what the Mexicans use.
Verja or Cancela use to refer to metallic structures made of tubes. have you googled images to see the difference? a verja is a metallic structure made of tubes that keep people outside a zone, it is also used as gate in some zones.
A cancela is a door/gate usually side to side with a verja, cancela is more used to refer to a metallic gate but can also be used as verja, it will depend on who are you talking to and who is he/she from.
I think i'm right but i am no linguist