embarkation vs boarding

embarkation and boarding both are nouns.

Word	Noun	Adjective	Verb	Adverb
embarkation	Yes	No	No	No
boarding	Yes	No	No	No

As nouns, embarkation and boarding are synonyms defined as:

embarkation and boarding: the act of passengers and crew getting aboard a ship or aircraft

Other synonyms of embarkation include embarkment.

embarkation (noun)	boarding (noun)
the act of passengers and crew getting aboard a ship or aircraft	the act of passengers and crew getting aboard a ship or aircraft
	a structure of boards