Dictionary.com defines "trust" asCrissa wrote:That's not faith, though. That's trust.
1. reliance on the integrity, strength, ability, surety, etc., of a person or thing; confidence.
2. confident expectation of something; hope.
3. confidence in the certainty of future payment for property or goods received; credit: to sell merchandise on trust.
4. a person on whom or thing on which one relies: God is my trust.
(I left out the legalese ones)
...and "faith" as
1. confidence or trust in a person or thing: faith in another's ability.
2. belief that is not based on proof: He had faith that the hypothesis would be substantiated by fact.
3. belief in God or in the doctrines or teachings of religion: the firm faith of the Pilgrims.
4. belief in anything, as a code of ethics, standards of merit, etc.: to be of the same faith with someone concerning honesty.
5. a system of religious belief: the Christian faith; the Jewish faith.
6. the obligation of loyalty or fidelity to a person, promise, engagement, etc.: Failure to appear would be breaking faith.
7. the observance of this obligation; fidelity to one's promise, oath, allegiance, etc.: He was the only one who proved his faith during our recent troubles.
It's a very slippery issue; Faith #1 and 2 are veeeeery similar to Trust #1, 2, 4.