"Liner" can refer to a type of makeup used around the eyes or a type of ship used for cargo transport. It is a common term in these contexts.
if you are talking about if it is a common noun or a proper noun, it is a proper noun.
Common is not a noun. If a common noun is part of a name, it becomes a proper noun. Proper nouns are the unique names of people, places, or things. Common nouns are the words for general things. Pronouns always replace proper and common nouns.
Samantha is a proper noun when used as a name for a specific person.
The common noun is person; the proper nouns are Spaniard and Spain.
Pean is a common noun. Proper nouns are the unique names of people, places, or things. Common nouns are the words for general things. If a common noun is part of a name, it becomes a proper noun. Pronouns always replace proper and common nouns.
No
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
proper
Common
common and proper
common
It is a proper noun, because it is the name of a specific thing.
common
it's a common noun. a proper noun would be Spider-Man.
Pencil proper or common noun
Proper
It's a common noun as it's a general name for a thing. There's nothing special or particular about it.