難点

1. Origins, structure, and basic meaning

• Structure: 難点 (なんてん) is a noun for a drawback that makes an object harder to use or a plan harder to carry out.
• Basic usage: 重いことが難点だ predicates weight as the drawback of a sturdy desk, while 計画の難点を整理する makes problems requiring improvement the object of analysis.

2. Common pitfalls and similar expressions

• One drawback and multiple issues
  • 難点だ evaluates one issue, while 難点を一つずつ presupposes multiple problems in a plan. Neither construction wholly dismisses the object as worthless.