無い

1. Origins, structure, and basic meaning

• Structure: 無い, read ない, expresses the absence of a thing or something abstract such as experience.
• Basic usage: In 冷蔵庫には卵が一つも無い。, there are no eggs at all in the refrigerator.

2. Common pitfalls and similar expressions

• Complete absence
  • 一つも無い means none at all, rather than a small quantity. 経験が無い applies absence to experience instead of countable objects.