Verified answer

it depends on the sentence though it is better to use more extended words.

There really isn't a rule and the words are often used interchangeably. For instance, you could say that a building is either big or large, you could say that an overweight person is either big or large, you could say that a pumpkin is either big or large. The same is true for the words little or small. There are a couple of common uses where little is used instead of small. A very young child would be referred to as a little boy or little girl (or a small child). And when someone is serving you something and asks if you would like more, you would say, "Yes, a little more coffee, please" (as an example) rather than use the word small.

Both adjectives suggest generally the idea of something above average size but broadly large refers to size and big to importance or significance. Large is used for example with clothes and sizes such as small/medium/large/extra large.

A large house would be one with a lot of rooms - a big house also with a lot of rooms and possibly looking imposing as well.

Large and big are interchangeable in these:

His [room / bedroom / kitchen] is [large / big].

Big is more commonly used than large in general:

big man, big house, big store, big car, big truck, big problem, big bank account, big fight, 'big money', 'big game', 'big deal', 'big trouble'