A swarm of bees diligently collected nectar from the flowers. Here 'swarm' is a/an -

• ​Swarm - (of something) a large group of insects, especially bees, moving together in the same direction.
- Bangla Meaning; জাঁক, পাল, দল.
- A swarm of bees diligently collected nectar from the flowers. Here 'swarm' is a - Collective noun.

• Collective Noun:
- A Collective Noun is the name of a number (or collection) of persons or things taken together and spoken of as one whole.
- যে সকল Noun দ্বারা সমজাতীয় কিছু ব্যক্তি, বস্তুর সমষ্টিকে বোঝায় তাদেরকে Collective Noun বলে।
- অর্থাৎ কিছু Common Noun এর সমষ্টিকেই collective noun বলে।
- কিছু collective noun হচ্ছে - cattle, herd, army, public, library, jury, committee, crew, majority, minority etc.