straighten out vs sort out

straighten out and sort out both are verbs.

Word	Noun	Adjective	Verb	Adverb
straighten out	No	No	Yes	No
sort out	No	No	Yes	No

As verbs, straighten out and sort out are synonyms defined as:

straighten out and sort out: make free from confusion or ambiguity; make clear

straighten out (verb)	sort out (verb)
put (things or places) in order	arrange or order by classes or categories
settle or put right	make free from confusion or ambiguity; make clear
change for the better	punish in order to gain control or enforce obedience
make free from confusion or ambiguity; make clear
make straight
extricate from entanglement