しんじゃ信者shinja
1.

A person who adheres to the beliefs and practices of a particular religion, often actively participating in its community and following its doctrines.

2.

An individual who passionately supports or is a devoted fan of a specific person, ideology, or cultural phenomenon, extending beyond religious contexts.

Example:

キリスト教信者は、一人の神が存在し、イエスキリストは神の子であると信じている。

きょうしんしゃ狂信者kyoushinsha
1.

A person who strongly adheres to a particular belief or ideology, often without critical examination, and displays an intense emotional attachment to it.

2.

An individual who exhibits extreme devotion to a cause or doctrine, frequently disregarding opposing views and rational thought.

3.

Someone whose unwavering commitment to their beliefs leads to zealous behavior, which may include hostility toward those who hold different perspectives.

じゅしんしゃ受信者jushinsha
1.

A person or entity that receives a message, communication, or information from another party.

2.

An individual who accepts and processes incoming data or signals, often in the context of communication systems.

3.

Someone who is intended to obtain or benefit from the information or service provided by a sender.

はいしんしゃ背信者haishinsha
1.

A person who betrays the trust or confidence of others, particularly by failing to uphold commitments or loyalty.

2.

An individual who intentionally deceives or acts against the interests of a group or individual with whom they previously aligned themselves.

3.

Someone who abandons or renounces loyalty to a cause or person, often for personal gain or benefit.

そうしんしゃ送信者soushinsha
1.

A person or entity that dispatches or transmits a message, information, or data to a recipient, typically through electronic means such as email or messaging apps.

2.

The party responsible for originating and sending out a communication or package, often associated with the initial point of contact in a correspondence or delivery process.

3.

An individual or organization that initiates a transfer of information, which could include various forms of media such as text, images, or files, to another party for the purpose of conveying information.