withdrawer vs junky

withdrawer and junky both are nouns.

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

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

Other hypernyms of withdrawer include drug addict, junkie.

withdrawer (noun)	junky (noun)
a depositor who withdraws funds previously deposited	a narcotics addict
a student who withdraws from the educational institution in which he or she was enrolled	someone who is so ardently devoted to something that it resembles an addiction
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