meaning - Difference between "larder" and "pantry"

What is the difference between larder and pantry? Is it size? Or content?

I found very similar definitions for both terms, something like

a room/place in which food is stored.

Which of the words is better for a separate room next to the kitchen, and which is better for a food-dedicated cupboard? Or even for a separate house for food storage, like they used to have in castles?

Answer

I think that today there is no big difference. A long time ago meat was stored in vats of lard in cooler rooms (hence: larder), while regular foods were kept in pantries. Today, pantry is used far more often than larder, especially in a residential context.Ngram