Faith means to have complete confidence and trust in someone or something. One can have faith in a person, in an object, or in a spirit or God. 
Faith是指完全相信某人或者某事。可以相信一个人，一种物体，一种精神或者是上帝。

Those who believe in God have faith in him, even though they have not and cannot see him.
那些相信上帝的人对上帝有一种信仰，即使他们没有也不能看到上帝。

I will always have faith that my mom will be there for me no matter what.
无论发生什么，我都相信妈妈会一直在我身边。

Here are some synonyms for this definition of faith.
Faith作为这种含义，这里有一些它的同义词。

1. Trust
信任

Trust is the firm belief in the reliability, truthfulness, and certainty in someone or something. Trust can be in a person, religious figure, or an object.
Trust是指对某人某事的可靠性，真实性和确定性的坚定信念。可以信任一个人，一个宗教人物或者是一个物体。

He knew that the most important thing in any relationship is trust.
他知道在任何关系中最重要的就是信任。

2. Confidence
信任

Confidence is to believe that one can trust and rely on someone or something.
Confidence指某人或者某物是可以被相信和依赖的。

It was clear that the boys on the team had a lot of confidence in their coach and their teammates.
很明显，队员们对他们的教练和队友有很大的信心。

How much confidence do you have that we can get the project done on time?
按时完成任务，你有多大把握？

3. Conviction
相信

Conviction can be a firmly help belief or opinion. When someone has conviction they are not afraid to say what they believe in and they are fully committed to that belief.
Conviction可以指坚定的信念或者观点。当一个人确信他不害怕说出这种信仰，他们才是完全的忠于这种信仰。

I like being a part of a company that has a lot of conviction in their mission.
我希望成为公司里这样的一个成员，在完成任务的过程中大家都能够相信我。

They don’t seem to have very much conviction in what they are saying.
他们似乎不太相信他们所说的话。

4. Optimism
乐观

Optimism refers to having hope and confidence about the future or that something positive will happen. Optimism is the ultimate positive belief.
Optimism只对未来抱有希望或者信心，相信美好的事物会发生。乐观是最终的积极信念。

I am incredibly optimistic about the future of our community.
我对我们社区的未来非常乐观。

While having optimism is great, having too much of it may cause you to believe in things that are unlikely to happen.
虽然乐观是好事，但是过多的乐观会让你相信不太可能发生的事情。

Faith has a second definition. It can also refer to a strong belief in God or religious doctrine. This belief is based on spiritual understanding and not proof. Faith can be used to describe a strong belief in any religion or spiritual belief.
Faith是有第二层含义的。它可以指对上帝或者宗教教义的强烈信仰。这种信仰基于精神理解而非事实基础。Faith可以用来描述对任何宗教或者精神的信仰。

She had faith that God was guiding her life.
她相信上帝在引导她的生活。

Just because he doesn’t strictly follow the religious text doesn’t mean he lacks faith.
不严格遵守宗教文本并不意味着他缺乏信仰。

Here are some synonyms for this definition of faith.
以下是faith作为此层含义的同义词。

5. Religion
宗教信仰

Religion refers to the belief and worship of a superhuman controlling force. Religion often refers to the organized worship of a God.
Religion是指对人类所不能及的信仰和控制力的崇拜。Religion也指有组织的敬拜上帝。

There are many different religions that are practiced around the world.
世界上有许多不同的宗教。

6. Sect
宗派

Sect refers to a group or organization that has a set of religious beliefs that are somewhat different than those of the larger religious group that they belong to. Some of the beliefs of a sect are usually at odds with what the larger group believes. These differences may be a belief in different texts or rituals.
Sect指有一套宗教信仰的团体或者组织，这种宗教信仰又与他们所属的较大的宗教团体有所不同。某一教派的信仰通常与较大教派的信仰不一致，这种不一致常常体现在文本或者仪式上。

Every faith has different sects in it, ours is no exception.
每一种信仰都有不同的教派，我们的也不例外。

7. Denomination
名称，教派

Denomination has many definitions, as a synonym to faith it is a group or branch of any religion. It is often used to describe different groups within the Christian faith.
Denomination有许多含义，作为faith的同义词，它表示宗教的一个分支。它通常被用来描述基督教信仰中的不同群体。

Which denomination is this church?
这座教堂是哪一个教派的？

8. Ideology
意识形态，观念学

Ideology refers to a system of ideas and ideals that usually forms the foundation of an economic or political policy. Political parties have a certain ideology or system of ideas on how then think things should be done.
Ideology指思想或者一种思想体系，是经济或者是政治政策的基础。

The group is splitting apart because there are too many different ideologies.
太多不同的意识形态使这个组织分裂。

9. Creed
信条，教义

Creed refers to a system of religious beliefs or faith. This can be used to refer to any religion, and is often associated with the Christian religion. It can also refer to a set of beliefs whose goal is to guide how someone lives their life.
Creed指宗教信仰或者宗教信仰体系。这个词可以用来指任何宗教，但是通常用来指基督教。这个词也可以指一系列的信念，他的目标是指导人们如何生活。

We often disagree because we believe in different political creeds.
我们的意见常常有分歧是因为我们的政治信条有所不同。