Legal distinction between selling and licensing?

What is the lega;l distinction between selling a product and licensing it?

Hi,

Here are the legal definitions for both:

License: 'A legal agreement granting permission to exercise a specified right
or rights to a work, often encompassed in an invoice, or the act of
granting same.'

Sell: 'An agreement by which one of the contracting parties, called the seller, gives a thing and passes the title to it, in exchange for a certain price in current money, to the other party, who is called the buyer or purchaser, who, on his part, agrees to pay such price.'