sealed vs covered

sealed and covered both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sealed	No	Yes	No	No
covered	No	Yes	No	No

sealed (adjective)	covered (adjective)
closed or secured with or as if with a seal	overlaid or spread or topped with or enclosed within something; sometimes used as a combining form
established irrevocably
undisclosed for the time being
determined irrevocably
apply a non-porous coating to something so as to ensure it is impervious
covered with a waterproof coating
(of walls) covered with a coat of plaster