tidal wave vs wave

tidal wave and wave both are nouns.

Word	Noun	Adjective	Verb	Adverb
tidal wave	Yes	No	No	No
wave	Yes	No	Yes	No

As nouns, wave is a hypernym of tidal wave; that is, wave is a word with a broader meaning than tidal wave:

tidal wave: a wave resulting from the periodic flow of the tides that is caused by the gravitational attraction of the moon and sun
wave: one of a series of ridges that moves across the surface of a liquid (especially across a large body of water)

Other hypernyms of tidal wave include moving ridge.

As nouns, wave is a hypernym of tidal wave; that is, wave is a word with a broader meaning than tidal wave:

tidal wave: an unusual (and often destructive) rise of water along the seashore caused by a storm or a combination of wind and high tide
wave: one of a series of ridges that moves across the surface of a liquid (especially across a large body of water)

Other hypernyms of tidal wave include calamity, cataclysm, catastrophe, disaster, tragedy, moving ridge.

tidal wave (noun)	wave (noun)
a wave resulting from the periodic flow of the tides that is caused by the gravitational attraction of the moon and sun	a movement like that of a sudden occurrence or increase in a specified phenomenon
an unusual (and often destructive) rise of water along the seashore caused by a storm or a combination of wind and high tide	a hairdo that creates undulations in the hair
an overwhelming manifestation of some emotion or phenomenon	the act of signaling by a movement of the hand
	(physics) a movement up and down or back and forth
	one of a series of ridges that moves across the surface of a liquid (especially across a large body of water)
	something that rises rapidly
	a persistent and widespread unusual weather condition (especially of unusual temperatures)
	an undulating curve

tidal wave (verb)	wave (verb)
	set waves in
	signal with the hands or nod
	move or swing back and forth
	twist or roll into coils or ringlets
	move in a wavy pattern or with a rising and falling motion