量

1. Origins, structure, and basic meaning

• Structure: 量 is read as りょう and is a noun for an amount or quantity that can be counted or measured.
• Basic usage: It can denote an amount of water to measure or the quantity of text that can be read at one time.

2. Common pitfalls and similar expressions

• An amount being measured
  • 水の量 names how much water is involved, while the later 量った expresses the act of measuring it. Example: 料理に使う水の量を量った。
• A readable quantity
  • 文章の量 refers to the quantity of text rather than its subject matter. Example: 一度に読める文章の量には限りがある。