这些名词都有“相信，信任”之意。
belief : 普通用词，指单纯从主观上的相信，不着重这种相信是否有根据。
- I admire his passionate belief in what he is doing.
我佩服他对自己的工作所抱的坚定信心。
faith : 语气较强，强调完全相信；有时也能仅凭感觉产生的相信。
- I have great faith in you─I know you'll do well.
我对你有信心——我知道你会干好的。
confidence : 指对某人某事有充分信心，断定不会使人失望，因而给予信任。
- A fall in unemployment will help to restore consumer confidence.
失业人数的下降会有助于恢复消费者的信心。
conviction : 多指根据长期交往或实践，对某人某事有了认识和了解后产生的信心和相信，侧重其坚定性。
- The leader's speech in defence of the policy didn't carry much conviction.
那位领导人为政策辩护的讲话不是很有说服力。
credit : 语气最弱，着重以声誉为信任的基础。
- Her credit isn't good anywhere now.
她借钱不还，弄得声名狼藉。
trust : 强调相信、信任的完全可靠。
- Her trust in him was unfounded.
她对他的信任毫无道理。 - It has taken years to earn their trust.
花了好多年才赢得他们的信任。
