lunar time period vs tide

lunar time period and tide both are nouns.

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

As nouns, lunar time period and tide are synonyms defined as:

lunar time period and tide: there are usually two high and two low tides each day

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