ما الفرق في المعنى بين "تجريان" و"نضاختان" في سورة الرحمن؟

Allah Almighty described two types of gardens for the people of Paradise. The first: ﴿But for him who fears the standing before his Lord, there will be two gardens.﴾ In them are two flowing springs, meaning: continuously flowing. The second: ﴿And below these two are two [other] gardens.﴾ In them are two gushing springs, meaning: overflowing with water. Gushing is less than flowing. And the flowing is better than the gushing because it combines both gushing and flowing.