submersible warship vs submersible

submersible warship and submersible both are nouns.

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

As nouns, submersible warship and submersible are synonyms defined as:

submersible warship and submersible: a warship designed to operate under water

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

submersible warship (adjective)	submersible (adjective)
	capable of being immersed in water or functioning while submerged