Catholic teaching holds that:
-We can know that God exists with certainty
-We can know that God cannot deceive
-We can know that God revealed himself through Christ Jesus and appointed the Catholic Church as his authoritative interpreter and teacher of that revelation
-Knowing all of this, with God’s grace, we must then have faith (trust) in what God has revealed because he has revealed it.
With all of that in mind, I would say faith is a kind of knowledge. Let me explain. We have certainty that the Catholic Faith is true because God has revealed it. That is knowledge. But that is a different kind of knowledge than immediate experience or intuition, like the immediate experience of the computer chair on which I am sitting. The truths of the Faith are not matters of direct experience or intuition (e.g. the Blessed Trinity), but we know they are true because God has revealed them. Whereas my knowledge of the computer chair relies on my immediate experience of it, my knowledge of the Blessed Trinity lies not on my immediate experience of it, but on the faith, which is certain, thatI have in God.
Hope that makes sense. Take a look at this long article which goes into what Catholics mean by faith:
ewtn.com/library/CHRIST/FTHRT.txt
I highly encourage you to read it, please!
