destiny vs causal agency

destiny and causal agency both are nouns.

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

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

destiny: the ultimate agency regarded as predetermining the course of events
causal agency: any entity that produces an effect or is responsible for events or results

Other hypernyms of destiny include causal agent, cause.

destiny (noun)	causal agency (noun)
an event (or a course of events) that will inevitably happen in the future	any entity that produces an effect or is responsible for events or results
the ultimate agency regarded as predetermining the course of events
your overall circumstances or condition in life (including everything that happens to you)