submergence vs submerge

submergence is a noun but submerge is not a noun.

Word	Noun	Adjective	Verb	Adverb
submergence	Yes	No	No	No
submerge	No	No	Yes	No

submergence (noun)	submerge (noun)
sinking until covered completely with water

submergence (verb)	submerge (verb)
	fill or cover completely, usually with water
	cover completely or make imperceptible
	put under water
	sink below the surface; go under or as if under water