catalyst vs causal agency

catalyst and causal agency both are nouns.

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

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

catalyst: something that causes an important event to happen
causal agency: any entity that produces an effect or is responsible for events or results

Other hypernyms of catalyst include causal agent, cause.

catalyst (noun)	causal agency (noun)
something that causes an important event to happen	any entity that produces an effect or is responsible for events or results
(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected