* Confiança: This is the most common and general word for "trust". It can be used in various situations, like trusting someone, a company, or a system.
* Fé: This word means "faith" and can also be used for trust, especially when talking about religious or spiritual trust.
* Credibilidade: This word means "credibility" and implies trust based on someone's reliability or competence.
* Confiabilidade: This word means "reliability" and is used when talking about trust in something's ability to work properly or be dependable.
The best word to use will depend on the specific context of what you are trying to say. For example, if you are talking about trusting a friend, "confiança" would be the most appropriate word. If you are talking about trusting a company's product, "credibilidade" might be better.