What are the differences between 3/4 inch and 3/8 inch in terms of size and applications?

The main difference between 3/4 inch and 3/8 inch is their size. 3/4 inch is larger than 3/8 inch. In terms of applications, 3/4 inch is typically used for heavier-duty tasks that require a stronger and more robust material, while 3/8 inch is often used for lighter-duty tasks where a smaller size is sufficient.