温度差

1. Origins, structure, and basic meaning

• Structure: 温度差 is read as おんどさ and is a noun for a difference in temperature or, figuratively, a gap in enthusiasm or attitude.
• Basic usage: Literal difference appears in 昼と夜の温度差, while a figurative gap appears in 計画に対する二人の温度差.

2. Common pitfalls and similar expressions

• Literal and figurative senses
  • With weather or objects it is measurable temperature; between people it is a difference in commitment or attitude.
• Difference from 気温差
  • 気温差 is specifically a difference in air temperature; 温度差 is broader and also supports the figurative sense.