反論

1. Origins, structure, and basic meaning

• Structure: 反論 is read as はんろん and is a noun and する verb for presenting a rebuttal or counterargument to another claim.
• Basic usage: Responding to a view appears in 意見に反論する, while a noun phrase appears in 主張への反論.

2. Common pitfalls and similar expressions

• Target markers に and への
  • A verbal rebuttal can mark its target with に, while the noun can link to the disputed claim with への.
• Difference from 反対
  • 反対 broadly means opposition; 反論 centers on actually stating reasons or an argument against a claim.