The difference between “Big and Large”—personal research

According to my own reaserch by using online concordancers, I conclude that there are two main differences between the usage of "big" and "large".

1. Large is often used to describe "quantity", but its not that often happened in the usage of “big”.

2. “Big” describe something that is not small which is used for a thing or an object.
And “large” is usually used to describe the concept of space or describe lots of things together and then become vey large.