junky vs addict

junky and addict both are nouns.

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

As nouns, addict is a hypernym of junky; that is, addict is a word with a broader meaning than junky:

As nouns, junky and addict are synonyms defined as:

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

Other synonyms of junky include freak, junkie, nut.

junky (noun)	addict (noun)
a narcotics addict	someone who is physiologically dependent on a substance or activity
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

junky (verb)	addict (verb)
	to cause (someone or oneself) to become dependent (on something, especially a narcotic drug)