nonsubmersible vs submersible

nonsubmersible is not a noun while submersible is a noun.

Word	Noun	Adjective	Verb	Adverb
nonsubmersible	No	Yes	No	No
submersible	Yes	Yes	No	No

nonsubmersible (noun)	submersible (noun)
	a warship designed to operate under water
	an apparatus intended for use under water

nonsubmersible (adjective)	submersible (adjective)
not submersible or submergible	capable of being immersed in water or functioning while submerged