retrieval vs human action

retrieval and human action both are nouns.

Word	Noun	Adjective	Verb	Adverb
retrieval	Yes	No	No	No
human action	Yes	No	No	No

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

retrieval: the act of regaining or saving something lost (or in danger of becoming lost)
human action: something that people do or cause to happen

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

retrieval (noun)	human action (noun)
the act of regaining or saving something lost (or in danger of becoming lost)	something that people do or cause to happen
the cognitive operation of accessing information in memory
(computer science) the operation of accessing information from the computer's memory