ejection vs barring

ejection and barring both are nouns.

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

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

Other hyponyms of ejection include defenestration, deportation, ostracism, blackball, ouster, ousting.

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