By definition, Constantinople.
What they have in common is the trade
No, sailing is a common noun. A proper noun is a specific name or title, such as the Sailing Supplies Online site or the 1938 movie 'Sailing Along'.
The word sailing is a verb; the present participle of the verb to sail. The present participle of the verb is also a gerund (verbal noun) and functions as a common noun. The present participle of the verb is also an adjective, for example sailing lessons or sailing weather.
They both use a deck.
draw
Sailing is not a 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.
Pumping water, and generating electricity. Sailing boats.
There is no minimum size. Just common sense
llama => A mall
llama
Llama.
During its fall, rape murder and pillage were common.