clincher vs causal factor

clincher and causal factor both are nouns.

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

As nouns, causal factor is a hypernym of clincher; that is, causal factor is a word with a broader meaning than clincher:

Other hypernyms of clincher include determinant, determinative, determiner, determining factor.

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