Here's why:
* Collective nouns represent a group of individuals. "Adventurers" refers to a group of people who engage in adventures.
* The noun can be used in singular or plural forms depending on the context. For example, "The adventurers were a motley crew" (plural, referring to the group) or "The adventurers' team prepared for their expedition" (plural, possessive).
However, it's worth noting that the term "adventurers" is not a strict collective noun like "flock" or "team". It's more flexible and can often be used as a plural noun referring to individual adventurers.