A collective noun is used to refer to a group of people or things. The opposite of a collective noun is a countable noun. If I say there is a flock of birds, you really don't know how many I mean...
Collective nouns are words for a group of like nouns. Examples: A flock of sheep. A stable of horses A troop of monkeys A troupe of actors A panel of experts A crowd of onlookers A fleet of cars A...
Yes, butterfly's is a common, possessive noun. The apostrophe 's' added to the noun indicates that something belongs to the butterfly, such a the butterfly's wing or the butterfly's flight.
A collective noun names a collection of persons, places, animals, or things. Ex: Persons: team , tribe , class , congregation , family , chorusAnimals: flock, herd, school (fish), litterPlaces: Latin...