causal factor vs determinative

causal factor and determinative both are nouns.

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

As nouns, causal factor and determinative are synonyms defined as:

causal factor and determinative: a determining or causal element or factor

Other synonyms of causal factor include determinant, determiner, determining factor.

causal factor (noun)	determinative (noun)
a determining or causal element or factor	a determining or causal element or factor
	one of a limited class of noun modifiers that determine the referents of noun phrases

causal factor (adjective)	determinative (adjective)
	having the power or quality of deciding