navigation vs cabotage

navigation and cabotage both are nouns.

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

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

navigation (noun)	cabotage (noun)
the guidance of ships or airplanes from place to place	navigation in coastal waters
the work of a sailor	the exclusive right of a country to control the air traffic within its borders
ship traffic