Of course, if that's your definition of "faith", what you're talking about here is the same as faith of existentialism. If you want to really expand faith to that level, the everything except self-existence is a leap of faith. And in that respect, there's no difference between me believing that I'm typing on an actual computer -- interacting with physical matter -- rather than just dreaming all of this.
Do I commit absolute certainty to the fact that others exist in the world? What about history? Do I believe that historical documents describing the actions of Einstein is true? Do I believe that mathematics is consistent and axiomatic? Do I believe that the logic and reason my brain is capable of in any way corresponds with the workings of the universe? Do I believe that any empirical observations made by anyone ever isn't just the result of some invisible, intangible flying spaghetti monster mucking with the results?
We've decided to narrow down the definition of faith with respect to religion to not encompass such a broad topic. Simply: religious faith is narrowed down to absolute certainty of the teachings of some organized scripture.
Said organized scripture may even have scientific or archeological evidence associated with it. But the definition of faith is that, regardless of whether or not anyone can produce any observable, repeatable evidence, one accepts something as truth. And in that respect, science is never like that because every theory comes with the caveat: "this is simply what is consistent with recorded observations". Science relies on faith in the general case the same way that your belief that the reality you observe is real relies on faith in the general case.