pulsation vs recurrent event

pulsation and recurrent event both are nouns.

Word	Noun	Adjective	Verb	Adverb
pulsation	Yes	No	No	No
recurrent event	Yes	No	No	No

As nouns, recurrent event is a hypernym of pulsation; that is, recurrent event is a word with a broader meaning than pulsation:

pulsation: the rhythmic contraction and expansion of the arteries with each beat of the heart
recurrent event: an event that recurs at intervals

Other hypernyms of pulsation include periodic event.

pulsation (noun)	recurrent event (noun)
(electronics) a sharp transient wave in the normal electrical state (or a series of such transients)	an event that recurs at intervals
the rhythmic contraction and expansion of the arteries with each beat of the heart
a periodically recurring phenomenon that alternately increases and decreases some quantity