芋

1. Origins, structure, and basic meaning

• Structure: The spelling is 芋, read いも, and it is a noun broadly covering crops grown for thickened underground parts.
• Basic usage: The basic sense of 芋 can refer, according to context, to a tuber crop such as a potato, sweet potato, or taro, or to its edible part.

2. Common pitfalls and similar expressions

• A category not fixed to one crop
  • Both examples use the form 芋. When no crop name is supplied, the word can indicate the broad category of tubers rather than one specific kind.
• Harvest and simmered-dish contexts
  • 畑で掘った芋を籠に入れて運んだ。 — We carried the tubers dug from the field in a basket.
  • 煮物に芋を入れると汁に甘みが出る。 — Adding tubers to the stew gives the broth a sweet flavor.