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.
llama
During its fall, rape murder and pillage were common.
The most common destination for carnival valor is eastern Caribbean. Some other popular destinations is southern and western Caribbean. They seem to have really good prices as well.