dismission vs termination

dismission and termination both are nouns.

Word	Noun	Adjective	Verb	Adverb
dismission	Yes	No	No	No
termination	Yes	No	No	No

As nouns, termination is a hypernym of dismission; that is, termination is a word with a broader meaning than dismission:

dismission: the termination of someone's employment (leaving them free to depart)
termination: the act of ending something

Other hypernyms of dismission include conclusion, ending.

dismission (noun)	termination (noun)
the termination of someone's employment (leaving them free to depart)	the act of ending something
official notice that you have been fired from your job	the end of a word (a suffix or inflectional ending or final morpheme)
	something that results
	a place where something ends or is complete
	a coming to an end of a contract period