Um... an audience?
A group of spectators are called an audience.
spectators
In the phrase, "a group of spectators", the noun "group" is functioning as a collective noun. The standard collective noun is "an audience of spectators"; however, collective nouns are an informal part of language. Any noun that suits the situation can function as a collective noun.
audience
audience
The collective noun is called a gaggle. Also spectators
No. It's just the plural form of a singular noun. If you said 'a group of spectators' the word group would be a collective noun.
A group of onlookers are called a faculty
Male spectators in the 15/95 age group.
they are called the gallery
they are the gallery
A group of listeners or spectators can be referred to as an "audience." This term is commonly used in contexts such as performances, presentations, or events where people gather to watch or listen. Depending on the setting, other terms like "crowd," "spectators," or "viewers" may also apply.