addict vs freak

addict and freak both are nouns.

Word	Noun	Adjective	Verb	Adverb
addict	Yes	No	Yes	No
freak	Yes	No	Yes	No

As nouns, addict and freak are synonyms defined as:

addict and freak: someone who is so ardently devoted to something that it resembles an addiction

Other synonyms of addict include junkie, junky, nut.

addict (noun)	freak (noun)
someone who is physiologically dependent on a substance or activity	a person or animal that is markedly unusual or deformed
someone who is so ardently devoted to something that it resembles an addiction	someone who is so ardently devoted to something that it resembles an addiction

addict (verb)	freak (verb)
to cause (someone or oneself) to become dependent (on something, especially a narcotic drug)	lose one's nerve