regressive vs retrograde

regressive and retrograde both are adjectives.

Word	Noun	Adjective	Verb	Adverb
regressive	No	Yes	No	No
retrograde	No	Yes	Yes	No

regressive (adjective)	retrograde (adjective)
opposing progress; returning to a former less advanced state	of amnesia; affecting time immediately preceding trauma
(of taxes) adjusted so that the rate decreases as the amount of income increases	moving from east to west on the celestial sphere; or--for planets--around the sun in a direction opposite to that of the Earth
	going from better to worse
	moving or directed or tending in a backward direction or contrary to a previous direction

regressive (verb)	retrograde (verb)
	get worse or fall back to a previous condition
	go back over
	move back
	move in a direction contrary to the usual one
	move backward in an orbit, of celestial bodies