doer vs causal agency

doer and causal agency both are nouns.

Word	Noun	Adjective	Verb	Adverb
doer	Yes	No	No	No
causal agency	Yes	No	No	No

As nouns, causal agency is a hypernym of doer; that is, causal agency is a word with a broader meaning than doer:

doer: a person who acts and gets things done
causal agency: any entity that produces an effect or is responsible for events or results

Other hypernyms of doer include causal agent, cause.

doer (noun)	causal agency (noun)
a person who acts and gets things done	any entity that produces an effect or is responsible for events or results