Answer:
Common nouns- planet, boy, month, country.
Proper nouns- Earth, Brahmaputra, Tamil Nadu, Monday.
Step-by-step explanation:
Nouns are names of things, persons, or places. And these nouns are further divided into proper or common nouns. Proper nouns are the names that are specific or particular in nature while common nouns are those nouns that can be used in common, in general. In other words, we can simply say that proper nouns are specific names for a particular thing while common nouns are used for numerous things.
The given nouns are classed or divided into common and proper nouns as follows-
Common nouns- planet, boy, month, country.
Proper nouns- Earth, Brahmaputra, Tamil Nadu, Monday.