phthisis vs pulmonary tuberculosis

phthisis and pulmonary tuberculosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
phthisis	Yes	No	No	No
pulmonary tuberculosis	Yes	No	No	No

As nouns, phthisis and pulmonary tuberculosis are synonyms defined as:

phthisis and pulmonary tuberculosis: involving the lungs with progressive wasting of the body

Other synonyms of phthisis include consumption, wasting disease, white plague.

phthisis (noun)	pulmonary tuberculosis (noun)
involving the lungs with progressive wasting of the body	involving the lungs with progressive wasting of the body