Answer:
some examples: person: man, woman, teacher, John, Mary. place: home, office, town, countryside, America.
Explanation:
Basically a noun is common thing like in the examples given
Further more a teacher is noun but if that teacher has got a name then she is a proper name .
Something that has name is a Proper noun and something that doesn't have any specific title or any name is a Common noun
I hope u get it now what are common nouns and there examples
:))