tidal wave vs manifestation

tidal wave and manifestation both are nouns.

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

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

tidal wave (noun)	manifestation (noun)
a wave resulting from the periodic flow of the tides that is caused by the gravitational attraction of the moon and sun	a public display of group feelings (usually of a political nature)
an unusual (and often destructive) rise of water along the seashore caused by a storm or a combination of wind and high tide	a manifest indication of the existence or presence or nature of some person or thing
an overwhelming manifestation of some emotion or phenomenon	expression without words
	a clear appearance
	an appearance in bodily form (as of a disembodied spirit)