submerged vs biological science

submerged is not a noun while biological science is a noun.

Word	Noun	Adjective	Verb	Adverb
submerged	No	Yes	No	No
biological science	Yes	No	No	No

submerged (noun)	biological science (noun)
	the science that studies living organisms

submerged (adjective)	biological science (adjective)
beneath the surface of the water
growing or remaining under water