An action of helping or doing work for someone.

सेवा

English Usage: She provides a service to local businesses.

Hindi Usage: वह स्थानीय व्यवसायों को सेवा प्रदान करती है।

In a good or satisfactory way.

अच्छा

English Usage: She sings well.

Hindi Usage: वह अच्छा गाती है।

Capable of being used; useful.

उपयोगी

English Usage: The old car is still serviceable.

Hindi Usage: पुराना कार अभी भी उपयोगी है।