The Difference between Big & Large

Big means 1. of considerable size or extent, e.g., the big meal 2. of considerable importance or seriousness, e.g. big cases



Large: of considerable or relatively great size, extent, or capacity, e.g. a large sum of money, a large flock of crows

Generally, big and large can be used when you describe the actual size; however, large is slightly more formal; also, large is used in the expressions: a large amount/number/ quantity.