not flowing or moving

ठहरा हुआ

English Usage: The stagnant water in the pond was a breeding ground for mosquitoes.

Hindi Usage: तालाब में ठहरा हुआ पानी मच्छरों का प्रजनन स्थल था।

the state of not moving or flowing

ठहराव

English Usage: The stagnation of the economy is concerning.

Hindi Usage: अर्थव्यवस्था का ठहराव चिंताजनक है।