tide vs recurrent event

tide and recurrent event both are nouns.

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

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

tide: the periodic rise and fall of the sea level under the gravitational pull of the moon
recurrent event: an event that recurs at intervals

Other hypernyms of tide include periodic event.

tide (noun)	recurrent event (noun)
the periodic rise and fall of the sea level under the gravitational pull of the moon	an event that recurs at intervals
something that may increase or decrease (like the tides of the sea)
there are usually two high and two low tides each day