upward vs downward

upward and downward both are adjectives.

Word	Noun	Adjective	Verb	Adverb
upward	No	Yes	No	Yes
downward	No	Yes	No	Yes

upward (adjective)	downward (adjective)
extending or moving toward a higher place	extending or moving from a higher to a lower place
directed up	on or toward a surface regarded as a base

upward (adverb)	downward (adverb)
spatially or metaphorically from a lower to a higher position	spatially or metaphorically from a higher to a lower level or position
to a later time