Answer:
Yes it is
Step-by-step explanation:
How do we understand the word 'swarm' when it is a noun? It can be easily defined as a herd. For example, A herd of bees is or a swarm of bees are the same.
Common noun can be defined into 4 main topics:
- Nouns that refer to things
- Nouns that refer to location
- Nouns that refer to number (unit)
- Type of nouns (word types)
And in this case, 'swarm' can be understand as a nouns that refer to things (Nouns refer to people, animals, things, phenomena, concepts, etc.) so yes it is a common noun.
Hope this help you :3