To let something fall.

गिराना

English Usage: Please don’t drop the glass.

Hindi Usage: कृपया ग्लास मत गिराना।

A sudden movement downward or to fall.

गिरावट

English Usage: The drop in temperature surprised everyone.

Hindi Usage: तापमान में गिरावट ने सभी को चौंका दिया।

Referring to something that is reduced or decreased in quantity.

गिरा हुआ

English Usage: The drop prices on electronics attracted many customers.

Hindi Usage: इलेक्ट्रॉनिक्स की गिरती कीमतें कई ग्राहकों को आकर्षित कर रही थीं।