sailing vs cabotage

sailing and cabotage both are nouns.

Word	Noun	Adjective	Verb	Adverb
sailing	Yes	No	No	No
cabotage	Yes	No	No	No

As nouns, cabotage is a hyponym of sailing; that is, cabotage is a word with a more specific, narrower meaning than sailing:

sailing (noun)	cabotage (noun)
riding in a sailboat	navigation in coastal waters
the work of a sailor	the exclusive right of a country to control the air traffic within its borders
the departure of a vessel from a port
the activity of flying a glider