tide vs time period

tide and time period both are nouns.

Word	Noun	Adjective	Verb	Adverb
tide	Yes	No	Yes	No
time period	Yes	No	No	No

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

Other hypernyms of tide include period, period of time.

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