adjournment vs ending

adjournment and ending both are nouns.

Word	Noun	Adjective	Verb	Adverb
adjournment	Yes	No	No	No
ending	Yes	No	No	No

As nouns, ending is a hypernym of adjournment; that is, ending is a word with a broader meaning than adjournment:

Other hypernyms of adjournment include conclusion, termination.

adjournment (noun)	ending (noun)
the termination of a meeting	the act of ending something
the act of postponing to another time or place	the end of a word (a suffix or inflectional ending or final morpheme)
	the last section of a communication
	event whose occurrence ends something
	the point in time at which something ends