disagreement vs speech act

disagreement and speech act both are nouns.

Word	Noun	Adjective	Verb	Adverb
disagreement	Yes	No	No	No
speech act	Yes	No	No	No

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

disagreement (noun)	speech act (noun)
a difference between conflicting facts or claims or opinions	the use of language to perform some act
the speech act of disagreeing or arguing or disputing
a conflict of people's opinions or actions or characters