A thing that is done or an act.

क्रिया

English Usage: The urgent action required was to evacuate the area.

Hindi Usage: आवश्यक क्रिया थी कि क्षेत्र को खाली किया जाए।

Requiring immediate action or attention.

तात्कालिक

English Usage: The urgent need for medical supplies was evident during the crisis.

Hindi Usage: संकट के दौरान चिकित्सा आपूर्ति की तात्कालिक आवश्यकता स्पष्ट थी।