a state of being securely positioned or established

स्थिरता

English Usage: The fixed stress on the bridge ensured its stability.

Hindi Usage: पुल पर स्थिरता ने उसकी स्थिरता सुनिश्चित की।

not subject to change; permanent

स्थायी

English Usage: She has a fixed stress level that does not fluctuate.

Hindi Usage: उसका तनाव स्तर स्थायी है जो नहीं बदलता।

to stabilize or establish something

स्थिर करना

English Usage: We need to fix the stress on the load-bearing wall.

Hindi Usage: हमें लोड-बेयरिंग दीवार पर तनाव स्थिर करना होगा।