分解

ぶんかい

analysis, disassembly

JLPT N2

Character Breakdown

Meaning and Usage

"分解" (ぶんかい) primarily means "disassembly" or "analysis." It is used when breaking something down into parts, whether physically (like machines or substances) or conceptually (like sentences or problems).

Common Contexts

You will often see "分解" in technical or scientific contexts, such as engineering, chemistry, or linguistics. For example, disassembling a machine to repair it, decomposing a chemical compound, or analyzing sentence structure.

Collocations and Patterns

  • 分解する: to disassemble or analyze something
  • 分解して調べる: to break down and investigate
  • 分解能 (ぶんかいのう): resolution (in optics or measurement), showing a related technical term

Register and Nuance

"分解" is a neutral, formal noun often used in academic, technical, or professional settings. It is not casual and rarely used in everyday conversation unless discussing specific tasks.

Common Learner Mistake

Learners sometimes confuse "分解" with "解析" (かいせき), which also means analysis but is more abstract and data-focused. "分解" emphasizes physical or structural breakdown, so use it when something is being taken apart or decomposed physically or structurally.

Example Sentences

このきかいをぶんかいして、こしょうのげんいんをしらべましょう。

Let's disassemble this machine and investigate the cause of the malfunction.

ぶんしょうをぶんかいして、ぶんぽうのこうぞうをりかいすることがたいせつです。

It is important to analyze the sentence to understand its grammatical structure.

かがくのじっけんでぶっしつをぶんかいしてせいぶんをしらべた。

In the chemistry experiment, the substance was decomposed to examine its components.