ejection vs expulsion

ejection and expulsion both are nouns.

Word	Noun	Adjective	Verb	Adverb
ejection	Yes	No	No	No
expulsion	Yes	No	No	No

As nouns, ejection and expulsion are synonyms defined as:

Other synonyms of ejection include exclusion, riddance.

As nouns, ejection and expulsion are synonyms defined as:

Other synonyms of ejection include forcing out, projection.

ejection (noun)	expulsion (noun)
the act of forcing out someone or something	the act of expelling or projecting or ejecting
the act of expelling or projecting or ejecting	the act of forcing out someone or something
	squeezing out by applying pressure