Answer:
Most of the time a hug is just what it is a hug. It is a form of affection,but a hug between friends is a differnet kind of affection,like I care about you,a sort of short hug and pat on the back.. Now a hug between two lovers is also differnet,this would be a hug like squeeze that the person holds their body close to another for a longer period than the friend hug. You get my idea don't you