subaqueous vs submerged

subaqueous and submerged both are adjectives.

Word	Noun	Adjective	Verb	Adverb
subaqueous	No	Yes	No	No
submerged	No	Yes	No	No

As adjectives, subaqueous and submerged are synonyms defined as:

Other synonyms of subaqueous include subaquatic, submersed, underwater.

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