靴下

1. Origins, structure, and basic meaning

• Structure: 靴下(くつした) is the noun for socks worn on the feet.
• Basic usage: It appears in everyday contexts such as taking socks off, changing them, and finding matching socks in the laundry.

2. Common pitfalls and similar expressions

• Putting on and taking off
  • Putting socks on is 靴下を履く; taking them off is 靴下を脱ぐ. 履き替えた means changing into another pair or replacement item.
• Pairs and individual socks
  • A pair of socks is counted as 一足. The example's 片方だけの靴下が三枚 refers to three unmatched individual socks, not three pairs.