How many collective nous are there?
There is no official number of collective nouns. While there may be a few hundred well established collective nouns, language is always evolving new ones are constantly being created. Others may fall out of use an disappear from everyday English.
This website lists all the well established collective nouns in the main categories of collective nouns. You can browse these below:
Collective nouns for animals, including mammals, birds, fish, reptiles and invertibrates
Collective nouns for things, objects and oddities
can i get to know how to use collective nouns correctly.
collective nouns are not easy to remember but on this website its a crack a nut