How to say "theme" in Japanese

Choosing the right word
  • テーマJLPT N2approx.Common
    nounThe most direct equivalent of 'theme': the topic or subject of a talk, essay, research, or design, and a recurring motif in music or art. When unsure, this is the word to reach for.
    It has been shown in most studies on this subject that intervention of the legislature had adverse effects.
  • ベースJLPT N1approx.Common
    nounReally means 'base' or 'basis' — the foundation something rests on. Its 'theme' sense is marginal, so for 'theme' itself this is seldom the word you want.
    A Cuba Libre is a cocktail with a rum base.
  • 課題かだいJLPT N1approx.Common
    nounA theme in the sense of a subject set as a task or problem to be addressed — a research theme or an issue to tackle. It implies something you must work on.
    その学生がくせいは自分じぶんの課題かだいに専念せんねんした。↗
    The student concentrated on his subject.
  • 題だいJLPT N3approx.Common
    nounCovers the title or set subject of a piece of writing or artwork — the theme you are given to write on. For the theme of a discussion or research, テーマ or 課題 fit better.
    「友情ゆうじょう」という題だいで作文さくぶんを書かきなさい。↗
    Write an essay on "Friendship".
  • 主題しゅだいJLPT N1approx.Common
    nounThe main or central theme — the principal subject of a work, discussion, or piece of music, including a musical theme or motif. Use it when 'theme' means the core idea rather than just any topic.
    私はこの主題しゅだいに精通せいつうしている。↗
    I am familiar with this subject.

Use 「テーマ」 as the all-purpose 'theme'; 主題 for a work's central theme or musical motif; 課題 for a theme set as a task; 題 for a title or set subject; 「ベース」 only when the theme is a basis.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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