speech act vs human action

speech act and human action both are nouns.

Word	Noun	Adjective	Verb	Adverb
speech act	Yes	No	No	No
human action	Yes	No	No	No

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

Other hypernyms of speech act include act, deed, human activity.

speech act (noun)	human action (noun)
the use of language to perform some act	something that people do or cause to happen