Translation guide
The English word "subjects" can refer to topics of discussion, academic fields, or people under authority. This guide helps learners choose the right Japanese expression for each meaning.
Referring to what is being talked about, written about, or studied in a general sense.
Common word for a topic of conversation or discussion. Natural in both casual and formal contexts.
今日の話題は何ですか？
What's today's topic?
その話題は避けましょう。
Let's avoid that subject.
Loanword from German 'Thema', often used for a central theme of a discussion, essay, or event. Slightly more formal or academic than 話題.
会議のテーマは環境問題です。
The subject of the meeting is environmental issues.
Refers to subject matter for artistic or literary works. Used in contexts like novels, paintings, or films.
この小説の題材は戦争です。
The subject of this novel is war.
Referring to fields of study in school or university.
Standard word for a school subject or course. Used in educational contexts.
好きな科目は何ですか？
What's your favorite subject?
彼は全科目で優秀な成績を取った。
He got excellent grades in all subjects.
Similar to 科目, but often used in compound words like 教科書 (textbook). Slightly more formal.
Can mean a department or course of study, but also used for a subject in a curriculum. Often seen in university contexts.
Referring to citizens of a country, or people ruled by a monarch or government.
The standard word for the people of a nation, especially in political or legal contexts.
国王は国民に演説した。
The king addressed his subjects.
国民の権利を守る。
Protect the rights of the people.
Historical term for subjects of a monarch. Rarely used in modern Japan except in historical contexts.
Referring to people or animals being studied in research.
Standard term for a human subject in an experiment or clinical trial.
被験者は全員健康な成人だった。
The subjects were all healthy adults.
Broader term meaning 'target' or 'object' of study. Can refer to people, animals, or things.
話題 (wadai) is the most common word for a topic of conversation. テーマ (tēma) implies a central theme, often for formal discussions or creative works. 題材 (daizai) is specifically for artistic or literary subject matter.
話題が変わった。
The subject changed.
論文のテーマを決める。
Decide on the theme of the thesis.
絵の題材を探す。
Look for a subject for a painting.
Do not use 主題 (shudai) or 件名 (kenmei) for school subjects. Use 科目 (kamoku) or 教科 (kyōka).
数学は難しい科目です。
Math is a difficult subject.
A new subject was introduced.
He is studying in the economics department.
天皇の臣民として忠誠を誓った。
They swore loyalty as subjects of the Emperor.
この研究の対象は大学生です。
The subjects of this study are university students.