tide vs rising tide

tide and rising tide both are nouns.

Word	Noun	Adjective	Verb	Adverb
tide	Yes	No	Yes	No
rising tide	Yes	No	No	No

As nouns, rising tide is a hyponym of tide; that is, rising tide is a word with a more specific, narrower meaning than tide:

tide: the periodic rise and fall of the sea level under the gravitational pull of the moon
rising tide: the occurrence of incoming water (between a low tide and the following high tide)

tide (noun)	rising tide (noun)
the periodic rise and fall of the sea level under the gravitational pull of the moon	the occurrence of incoming water (between a low tide and the following high tide)
something that may increase or decrease (like the tides of the sea)
there are usually two high and two low tides each day