a swarm
A blessing.
Breakout groups are called sects.
A group of Penguins is called a "waddle" A group of Penguins is called a "waddle"
They're referred to as a pod. a pod of whales
A group of caribou is called a herd. Reindeer are also grouped in herds.
The proper term for a group of stars is "asterism". They can also be known as a "cluster" and/or a "constellation".
MOB
A scientist who studies insects is called an "entomologist".
That would be called biological control of insects.
Meat
In 5A
they have no particular name,they are called non harmful insects