barring vs expulsion

barring and expulsion both are nouns.

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

As nouns, expulsion is a hypernym of barring; that is, expulsion is a word with a broader meaning than barring:

Other hypernyms of barring include ejection, exclusion, riddance.

barring (noun)	expulsion (noun)
the act of excluding someone by a negative vote or veto	the act of expelling or projecting or ejecting
	the act of forcing out someone or something
	squeezing out by applying pressure