submarine earthquake vs quake

submarine earthquake and quake both are nouns.

Word	Noun	Adjective	Verb	Adverb
submarine earthquake	Yes	No	No	No
quake	Yes	No	Yes	No

As nouns, quake is a hypernym of submarine earthquake; that is, quake is a word with a broader meaning than submarine earthquake:

submarine earthquake: an earthquake at the sea bed
quake: shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity

Other hypernyms of submarine earthquake include earthquake, seism, temblor.

submarine earthquake (noun)	quake (noun)
an earthquake at the sea bed	shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity

submarine earthquake (verb)	quake (verb)
	shake with fast, tremulous movements
	shake with seismic vibrations