noun
regional difference; geographical variation
Used to describe differences between regions in customs, language, climate, prices, etc.
同じ国でも、食文化には地域差がある。
Even within the same country, there are regional differences in food culture.
この調査では、気温の地域差がはっきりと現れた。
In this survey, regional differences in temperature clearly emerged.
男女差 refers to gender differences, while 地域差 is about geographical variation.
Compound of 地域 (region) and 差 (difference).