毛糸

1. Origins, structure, and basic meaning

• Structure: 毛糸(けいと) is yarn used for knitting items such as hats and clothing.
• Basic usage: It describes knitting a child's hat from red yarn.
  • 赤い毛糸で、子どもの帽子を編んだ。

2. Common pitfalls and similar expressions

• Thread and yarn
  • 糸(いと) is the broader term for thread or yarn. 毛糸 refers to knitting yarn, rather than being a name for every kind of sewing thread.
• Knitting and sewing
  • 毛糸で帽子を編む means to knit a hat from yarn. 縫う(ぬう) describes sewing or stitching.