The noun form of the adjective “coward” is-

1. cowardice
2. cowardness
3. cowardly
4. cowardy

Answer: cowardness

Explanation: Coward – ভীরু।
Cowardness – ভীরুতা।
Coward হলো verb.
Cowardness হলো noun form.
Cowardly হলো adverb.