troubleshooter vs trouble shooter

troubleshooter and trouble shooter both are nouns.

Word	Noun	Adjective	Verb	Adverb
troubleshooter	Yes	No	No	No
trouble shooter	Yes	No	No	No

As nouns, troubleshooter and trouble shooter are synonyms defined as:

troubleshooter and trouble shooter: a worker whose job is to locate and fix sources of trouble (especially in mechanical devices)

troubleshooter (noun)	trouble shooter (noun)
a worker whose job is to locate and fix sources of trouble (especially in mechanical devices)	a worker whose job is to locate and fix sources of trouble (especially in mechanical devices)