両側

1. Origins, structure, and basic meaning

• Structure: 両側 combines 両, “both,” with 側, “side,” and is read りょうがわ.
• Basic usage: It refers to both opposing sides of a road, object, or other reference point.
  • In 道の両側に背の高い木が並んでいます。, に marks where the trees stand; in 箱の両側を持って、ゆっくり運んでください。, を marks the parts to hold.

2. Common pitfalls and similar expressions

• Both sides together
  • 両側 includes both sides of the reference object, not just one. Use 片側(かたがわ) when only one side is meant.
• Location and object particles
  • In 両側に並ぶ, the two sides are a location; in 両側を持つ, they are the parts acted on.
• 両側 and 両方
  • 両側 focuses on two spatial faces or edges. 両方(りょうほう) more broadly means both of two choices, people, or things.