Freedom of Religion and belief

Nowaday ideas are somehow wierd!
People have come with this idea "FREEDOM" while there is no clear and elaborated description for the word! They just use it as an idea for showing they are intellectual and looking for rights of humans!
But now, this world we are living in, is not a good place for ambiguous concepts, now, we need every word to be cleared, now, just the word itself has no more worth, today, the meaning is important, nobody cares about the beauty of a word, anymore of course!!
Now religion is a meaning of nothing! nobody knows what religion is? All just accepted one! Just accepted the word! So is that word holy?
The meaning is behind that! You dont need to any intuition only think about the meaning.
Is the religion the belief, are these two the same?
Let me talk about this later, for now i can only introduce a book to you, and that's :
FREEDOM of RELIGION and BELIEF, by Kevin Boyle and Juliet Sheen