decisive factor vs clincher

decisive factor and clincher both are nouns.

Word	Noun	Adjective	Verb	Adverb
decisive factor	Yes	No	No	No
clincher	Yes	No	No	No

As nouns, decisive factor and clincher are synonyms defined as:

decisive factor and clincher: a point or fact or remark that settles something conclusively

decisive factor (noun)	clincher (noun)
a point or fact or remark that settles something conclusively	a tool used to clinch nails or bolts or rivets
	a point or fact or remark that settles something conclusively
	an argument that is conclusive