Answer:
crew
Explanation:
Collective nouns are nouns that are normally in its singular form but that refers to more than one person, animal, thing or concept considered a single entity because they share one or more characteristics.
"Crew" is an example of a collective noun because this noun it's singular but it refers to a group of two or more persons organized for some specific purpose.
Some other examples of collective nouns are team, congregation, class, herd, flock, gang, mob, group, and family.
