What is difference between share and gross in movie collections

Numbers are very misleading. When a producer(Ex Dookudu Producer) announces his movie grosses 100 crores,many people presume "collections - budget = profits". This is far from it. Like any
other business, the film trade has 'layers' of middle men between the filmmaker and end
consumer, who are all inalienable parts of the business.

One of the most common terms we hear used in the trade is "gross", "nett" and "share".
If you understand these three terms, you would understand the basics of film trade. Most
of the times, what you read in the papers is the "gross collections". Gross is nothing
but number of tickets sold x ticket price. It's the total amount generated by a movie at
ticket counters.