Translation guide
Expressions for describing different stages, aspects, or steps of a process, situation, or life.
Referring to distinct periods or steps within a development, project, or lifecycle.
The most common and versatile word for 'phase' or 'stage' in a process, plan, or development.
プロジェクトは次の段階に入った。
The project has entered the next phase.
この計画は三つの段階に分かれている。
This plan is divided into three phases.
Often used for phases in games, matches, or critical turning points in a situation. Slightly more formal or analytical.
試合は新たな局面を迎えた。
The match entered a new phase.
Loanword from English, common in business, IT, and project management contexts.
開発の第一フェーズが完了した。
The first phase of development has been completed.
Referring to different sides, features, or dimensions of a topic, problem, or personality.
Means 'aspect' or 'side' of a matter. Used for various facets of an issue or character.
彼の性格にはさまざまな側面がある。
There are various phases to his personality.
問題のあらゆる側面を検討する必要がある。
We need to examine every phase of the problem.
A simpler, more common word for 'aspect' or 'side'. Often used in compounds like 良い面 (good side).
物事にはいろいろな面がある。
There are various phases to things.
Referring to the changing appearance of the moon or planets.
The technical term for 'phase' in astronomy, e.g., phases of the moon.
月の相は約29.5日で一巡する。
The phases of the moon cycle every 29.5 days.
Refers to the waxing and waning of the moon; a more descriptive, everyday term.
Referring to phases in one's life, such as childhood, adolescence, or a difficult period.
General word for 'period' or 'time', often used for life phases.
人生にはさまざまな時期がある。
There are various phases in life.
Loanword often used for life stages, especially in psychological or self-help contexts.
段階 is the safest choice for 'phase' in most contexts (projects, processes). 局面 is better for critical junctures or game/match situations. フェーズ is a direct loanword common in business and tech, but may sound jargon-like in everyday speech.
The English phrase 'various phases' is often best translated by choosing the right noun for 'phase' and adding さまざまな or いろいろな. A direct translation like さまざまなフェーズ is possible but can sound unnatural outside of business contexts.
The phases of the moon have long been used as a guide for agriculture.
彼は今、人生の新しいステージにいる。
He is now in a new phase of his life.