Vanilla extract can be substitute for vanilla essence on a 1:1 basis (e.g 1tsp of vanilla extract is equal to 1tsp vanilla essence), on a strength-for-strength basis at least. But the flavour of...
yes you can because they are practicly the same just with different names
Vanilla Essence does not have alcohol in it, and is at least double the strength to that of Vanilla Extract, which has...
No. Extract tends to have a stronger flavor since it is the vanilla bean soaked in alcohol. Flavoring may have other ingredients and will be less concentrated.