The part of speech depends on the use of the word in context. If the use is "Port wine", the word is used to describe the noun "wine" and therefore is an adjective. If the word is used as a noun e.g., "...a glass of Port", it is a noun.
Port is a noun as in "He docked the ship in the port." Port can be used as a verb. It describes an action. "Port the boat over there."
Port is a wine made in a specific manner.
The introduction of the port wine which is a sweet fortified wine from the Douro region of Portugal.
wine
It's a desert wine.
port-wine stainport-wine stain
A port wine glass looks like a normal wine glass except the inside is a bit bigger than normal. The port wine glass has a thin stand with a wide circular shape.
Cognac is an aged distilled wine which tastes nothing like port.
Favor is a noun and a verb. Noun: Would you mind doing a favor for me? Verb: He favors red wine over white wine.
Spring and Port Wine - 1970 is rated/received certificates of: UK:A
No, it is a fortified wine.
Port is Portugal's most famous wine. Port is exported from Oporto in Portugal