troubler vs trouble maker

troubler and trouble maker both are nouns.

Word	Noun	Adjective	Verb	Adverb
troubler	Yes	No	No	No
trouble maker	Yes	No	No	No

As nouns, troubler and trouble maker are synonyms defined as:

Other synonyms of troubler include bad hat, mischief-maker, troublemaker.

troubler (noun)	trouble maker (noun)
someone who deliberately stirs up trouble	someone who deliberately stirs up trouble