impermeable vs retentive

impermeable and retentive both are adjectives.

Word	Noun	Adjective	Verb	Adverb
impermeable	No	Yes	No	No
retentive	No	Yes	No	No

impermeable (adjective)	retentive (adjective)
preventing especially liquids to pass or diffuse through	good at remembering
	having the capacity to retain something
	having the power, capacity, or quality of retaining water