distressful vs troubling

distressful and troubling both are adjectives.

Word	Noun	Adjective	Verb	Adverb
distressful	No	Yes	No	No
troubling	No	Yes	No	No

As adjectives, distressful and troubling are synonyms defined as:

Other synonyms of distressful include distressing, disturbing, perturbing, worrisome, worrying.

distressful (adjective)	troubling (adjective)
causing distress or worry or anxiety	causing distress or worry or anxiety