Select the option that can be used as a one-word substitute for the given group of words.

A large group of people

Horde

The word that can be used as a one-word substitute for "a large group of people" is horde.

• Convocation is a formal meeting of a group of people.
• Flock is a group of animals, especially sheep, that move together.
• Herd is a group of animals, especially cattle, that move together.
• Horde is a large, unruly crowd of people.

Horde is the most appropriate word for the given group of words because it specifically refers to a large, unruly crowd of people. It is derived from the Old Turkic word orda, meaning "camp."