junky vs withdrawer

junky and withdrawer both are nouns.

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

As nouns, withdrawer is a hyponym of junky; that is, withdrawer is a word with a more specific, narrower meaning than junky:

Other hyponyms of junky include cocaine addict, binger, crack addict, heroin addict, opium addict, opium taker.

junky (noun)	withdrawer (noun)
a narcotics addict	a depositor who withdraws funds previously deposited
someone who is so ardently devoted to something that it resembles an addiction	a student who withdraws from the educational institution in which he or she was enrolled
	a contestant who withdraws from competition
	a drug addict who is discontinuing the use of narcotics
	an individualist who withdraws from social interaction
	an authority who withdraws permission