confrontation vs disagreement

confrontation and disagreement both are nouns.

Word	Noun	Adjective	Verb	Adverb
confrontation	Yes	No	No	No
disagreement	Yes	No	No	No

As nouns, disagreement is a hypernym of confrontation; that is, disagreement is a word with a broader meaning than confrontation:

confrontation (noun)	disagreement (noun)
the act of hostile groups opposing each other	a difference between conflicting facts or claims or opinions
a focussed comparison; bringing together for a careful comparison	the speech act of disagreeing or arguing or disputing
a hostile disagreement face-to-face	a conflict of people's opinions or actions or characters
a bold challenge
discord resulting from a clash of ideas or opinions