成せい分ぶん

せ

い

ぶ

ん

Common wordJLPTN2Freq.FrequencyTop 5,000

Meanings

Refers to the constituent parts of a substance, mixture, or abstract whole. Common in scientific, nutritional, and everyday contexts.

〈物もの〉に〈物もの〉が含ふくまれるa component is contained in something
この飲のみ物ものには天てん然ねんの成せい分ぶんが含ふくまれている。
This drink contains natural components.
〈物もの〉の成せい分ぶんを分ぶん析せきするto analyze the components of something
研けん究きゅう者しゃはサンプルの成せい分ぶんを分ぶん析せきした。
The researcher analyzed the components of the sample.
〈物もの〉は〈数かず〉の成せい分ぶんからなるsomething consists of a certain number of components
この薬くすりは五いつつの成せい分ぶんからなっている。
This medicine consists of five ingredients.

要よう素そN3
要素 refers to an abstract element or factor in a system, while 成分 refers to a concrete constituent of a substance or mixture.
材ざい料りょうN4
材料 emphasizes raw materials used to make something, whereas 成分 emphasizes the analytical breakdown of what something already consists of.
主しゅ成せい分ぶんN2
成分 is the general word for any ingredient or component, while 主成分 specifies the primary, dominant one.
組そ成せい
成分 names an individual ingredient or component, whereas 組成 describes the overall composition formed by those components.
エレメント
成分 specifically means an ingredient or constituent of a mixture, food, or substance, whereas エレメント is used more broadly for abstract or structural parts.

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Sino-Japanese compound of 成 (become, form) and 分 (part, division). The combination naturally yields 'constituent part' or 'component'.