It is no use waiting for the bus at this hour. Here, the word “waiting” is -

Correct answer: Gerund.
- এখানে “waiting” শব্দটি মূল verb “wait” থেকে এসেছে এবং এটি noun-এর মতো কাজ করছে।
- Verb-এর -ing form যখন Noun হিসেবে ব্যবহৃত হয়, তখন তাকে Gerund বলে।

• Gerund: Verb -এর সাথে ing যোগ হয়ে যদি noun -এর কাজ করে অর্থাৎ, একই সাথে Verb ও noun -এর কাজ করে, তখন তাকে Gerund বলে।
- সহজে → Gerund = Verb + ing = noun = Verb + noun -এর কাজ করে।
- Gerunds don’t describe action—they act as nouns.

• Functions of the Gerund:
1. As a subject of a verb: Swimming is a healthy form of exercise.
2. As an object of a verb: She loves reading mystery novels.
3. As an object of a preposition: He is very fond of cooking.
4. As a complement of a verb: My favorite hobby is gardening.
5. As absolutely (part of a compound noun): We need new walking shoes for the trip.

Source:
1. A Passage to the English Language by S.M. Zakir Hussain.
2. Website English Wizard by Saleh Ahmed.