A group of adult cats is called a clowder or a glaring.
A group of cats is called a litter if they are kittens, and a clutter if they are adults.
A baby raccoon is called a "kit".
It means the age group or group of interests. People are different such as teens and adults. If you're the writer, do you intend for your book to be for teens or for adults?
adults
Teens
Young adults
adults
The age group considered young adults when selecting books is typically between 12 and 18 years old.
The 2011 film called the Eves is a horror movie where a group of young adults get stuck after their vehicle breaks down. To discover who the killer is, you will need to rent the movie and watch it.
Men
A group of Dolphins are called a Pod
Young adults