Yes, as a person who has taught Religious Studies I can say uniquivicabally that Athiesm is a religion. The word comes from the Greek word Theos, meaning God or of God. When you put an "a" or an "i" in front of a word in Greek you are negating the word. All Atheism means is no god. But it still has all the trademarks of a religion. It answers the question of whether or not God exists. It has an orgin for creation, generally a scientific explanation. It has moral and ethical laws. Atheists still think it is bad to kill someone just for different reasons. Life becomes sacred, not because it was a gift, but because there is nothing after it. And I have found Atheists to be just as, intolerant, bigotted, ignorant, about science as well as religion, absolutist and just down right stupid as people whom claim a religion. So there is no difference between the two.
Both are belief systems and any system of beliefs has adherents whom are well informed and faithful to those beliefs and those who only pay lip service to them. Every system also had adherents whom follow those beliefs on blind faith, for whatever reason, and are therefore suceptable to the most idiotic claims.
There isn't a difference at all.
No, I say.