retrograde vs pull away

retrograde is an adjective but pull away is not an adjective.

Word	Noun	Adjective	Verb	Adverb
retrograde	No	Yes	Yes	No
pull away	No	No	Yes	No

As verbs, pull away is a hypernym of retrograde; that is, pull away is a word with a broader meaning than retrograde:

Other hypernyms of retrograde include draw back, move back, pull back, recede, retire, retreat, withdraw.

retrograde (adjective)	pull away (adjective)
of amnesia; affecting time immediately preceding trauma
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

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