heckler vs trouble maker

heckler and trouble maker both are nouns.

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

As nouns, trouble maker is a hypernym of heckler; that is, trouble maker is a word with a broader meaning than heckler:

heckler: someone who tries to embarrass you with gibes and questions and objections
trouble maker: someone who deliberately stirs up trouble

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

heckler (noun)	trouble maker (noun)
someone who tries to embarrass you with gibes and questions and objections	someone who deliberately stirs up trouble