determinant vs determining

determinant is a noun but determining is not a noun.

Word	Noun	Adjective	Verb	Adverb
determinant	Yes	Yes	No	No
determining	No	Yes	No	No

As adjectives, determinant and determining are synonyms defined as:

Other synonyms of determinant include deciding, determinative.

determinant (noun)	determining (noun)
a determining or causal element or factor
a square matrix used to solve simultaneous equations
the site on the surface of an antigen molecule to which an antibody attaches itself

determinant (adjective)	determining (adjective)
having the power or quality of deciding	having the power or quality of deciding