white plague vs drug addiction

white plague and drug addiction both are nouns.

Word	Noun	Adjective	Verb	Adverb
white plague	Yes	No	No	No
drug addiction	Yes	No	No	No

As nouns, white plague and drug addiction are synonyms defined as:

white plague and drug addiction: an addiction to a drug (especially a narcotic drug)

white plague (noun)	drug addiction (noun)
involving the lungs with progressive wasting of the body	an addiction to a drug (especially a narcotic drug)
an addiction to a drug (especially a narcotic drug)