Faith is being absolutely certain something is true, and acting accordingly. Thus faith and action are two sides of the same coin.
Faith is calling the things that are not as though they were until the things that are promised to be are made manifest.
Faith is the substance of things hoped for and the conviction of things not seen.
Faith is more than accepting a fact as true. It is putting one's complete trust in something that has not yet been known through physical senses.
Faith is not courage, but courage comes from faith.
Faith is a gift from God.
Faith is rare.
Faith is the power of God to create a new man in His image and glory.
Faith is rest.
Faith is the opposite of worry.
...thats about all I can think of...