free trader vs supporter

free trader and supporter both are nouns.

Word	Noun	Adjective	Verb	Adverb
free trader	Yes	No	No	No
supporter	Yes	No	No	No

As nouns, supporter is a hypernym of free trader; that is, supporter is a word with a broader meaning than free trader:

Other hypernyms of free trader include admirer, booster, champion, friend, protagonist.

free trader (noun)	supporter (noun)
an advocate of unrestricted international trade	a band (usually elastic) worn around the leg to hold up a stocking (or around the arm to hold up a sleeve)
	a support for the genitals worn by men engaging in strenuous exercise
	a person who backs a politician or a team etc.
	a person who contributes to the fulfillment of a need or furtherance of an effort or purpose
	someone who supports or champions something