Proper nouns are the names of specific things. "Bus" is generic (it's not picking out a particular item, but any one of a class of items), so it's a common noun.
common noun
As a name of a road , Park Avenue', it is a proper noun, and both words star with a capital letter. However, when used separately, as 'the park, or 'the avenue', they are common nouns and so not need a capital letter.
Yes, the compound noun 'bus station' is a common noun, a word for any bus station anywhere.A proper noun is the name of a person, place, thing, or a title; for example:City of McAllen: Central Bus Station, McAllen, TXBristol Bus Station, Marlborough Street, Bristol, UKPudu Sentral Bus Station, Kuala Lumpur, Malaysia"Bernie Magruder and the Bus Station Blow Up" by Phyllis Reynolds Naylor
It is a proper noun, because it is the name of a specific thing.
Proper noun
proper
it's a common noun. a proper noun would be Spider-Man.
Pencil proper or common noun
The noun cassette is a common noun.
a common noun?
Camel is a common noun.
The answer is proper noun. Examples of common noun and proper noun are: Proper noun: Mary Collins Common noun: monkey