navigation vs pilotage

navigation and pilotage both are nouns.

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

As nouns, navigation and pilotage are synonyms defined as:

navigation and pilotage: the guidance of ships or airplanes from place to place

Other synonyms of navigation include piloting.

navigation (noun)	pilotage (noun)
the guidance of ships or airplanes from place to place	the guidance of ships or airplanes from place to place
the work of a sailor	the occupation of a pilot
ship traffic