Here's why:
* Collective nouns refer to a group of individuals considered as a single unit.
* "Company" can refer to a group of people working together, like a business or a group of friends.
Examples:
* The company is having a holiday party. (refers to all employees as a single unit)
* My company of friends went hiking. (refers to the group of friends as a single unit)
However, "company" can also be a common noun depending on the context.
Examples:
* I need to start my own company. (refers to a business)
* I enjoy company when I eat dinner. (refers to the presence of others)
So, the type of noun "company" is depends on the specific situation and how it's used.