Capable of being believed; reasonable or probable.

विश्वसनीय

English Usage: Her explanation seemed plausible, so we accepted it.

Hindi Usage: उसका स्पष्टीकरण विश्वसनीय लगा, इसलिए हमने इसे स्वीकार कर लिया।

One of two or more available possibilities.

विकल्प

English Usage: We need to find an alternative solution to this problem.

Hindi Usage: हमें इस समस्या का एक विकल्प हल ढूंढना होगा।