question of fact vs matter of fact

question of fact and matter of fact both are nouns.

Word	Noun	Adjective	Verb	Adverb
question of fact	Yes	No	No	No
matter of fact	Yes	No	No	No

As nouns, question of fact and matter of fact are synonyms defined as:

question of fact and matter of fact: a disputed factual contention that is generally left for a jury to decide

question of fact (noun)	matter of fact (noun)
a disputed factual contention that is generally left for a jury to decide	a matter that is an actual fact or is demonstrable as a fact
	a disputed factual contention that is generally left for a jury to decide