phthisis vs white plague

phthisis and white plague both are nouns.

Word	Noun	Adjective	Verb	Adverb
phthisis	Yes	No	No	No
white plague	Yes	No	No	No

As nouns, phthisis and white plague are synonyms defined as:

phthisis and white plague: involving the lungs with progressive wasting of the body

Other synonyms of phthisis include consumption, pulmonary tuberculosis, wasting disease.

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