speech act vs human activity

speech act and human activity both are nouns.

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

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

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

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