subordinative vs subordinating

subordinative and subordinating both are adjectives.

Word	Noun	Adjective	Verb	Adverb
subordinative	No	Yes	No	No
subordinating	No	Yes	No	No

As adjectives, subordinative and subordinating are synonyms defined as:

subordinative and subordinating: serving to connect a subordinate clause to a main clause

subordinative (adjective)	subordinating (adjective)
serving to connect a subordinate clause to a main clause	serving to connect a subordinate clause to a main clause