Fetching details from the dictionary...

disassembly; dismantling; disaggregating; taking apart; breaking up; analysis; parsing
decomposition; resolution; disintegration; degradation
factorization
機械を分解して構造を調べることにした。
I decided to disassemble the machine and examine its structure.
この物質は熱で簡単に分解してしまう。
This substance easily decomposes with heat.
複雑な問題を分解して考えると分かりやすい。
Breaking down complex problems makes them easier to understand.