What is the Masculine gender of 'Nun'?

The necklace is made of gold. What kind of noun is the word 'gold'?

Which one of the following is the best translation in Bangla of the sentence "They had hardly spoken all evening"?

He has publicly admitted all the wrong that he made. Which part of speech is 'wrong' here in this sentence?

The plural form of 'Basis' is-