Ok, so then what's your definition of philosophy? Tell me specifically why you believe they are different.
If you're referring to the 'faith' aspects of some religions vs the 'scientific method' -- or 'rational argument' for philosophy, then you have a very specific definition of the word 'religion'. laxman was right in saying that my definition of religion is very broad, but to me, if you can lump Buddhism and other non-violent, seemingly rational, almost poetic religions into the same category, then both philosophy and science (in their many forms and interpretations) get very close to fitting the more general definition of religion.
Many (but certainly not all) atheists reject 'religion' as outright stupid -- whereas their own life practices are unique and superior. Sure, whatever. They're just making general claims about specific instances, and spouting off the same bullshit words that everybody everywhere at all times says when they don't agree.