Faith is belief without evidence.
Science is the study of the behaviour and nature of the universe around us and everything in it...governed by the scientific methodology and observational and experimental evidence.
Philosophy [as per link] is a way of thinking about the world, the universe, and society. It works by asking very basic questions about the nature of human thought, the nature of the universe, and the connections between them. The ideas in philosophy are often general and abstract.
https://www.google.com/search?q=definition philosophy&oq=definition philosophy&aqs=chrome..69i57j0l7.6879j1j7&sourceid=chrome&ie=UTF-8
I think that Faith usually does have evidence associated with it. And I think that you already know that.
I have faith that the chair I am sitting in will hold me up because it has always done so before. There is evidence for my faith but in reality it could break this time.
I have faith that my employee will not steal my car when I give him the keys because I know him, and have found him to be trustworthy. I have faith or trust in him because of the experience and evidence I have.
I am sure you do the same kinds of things all the time.