glomerulonephritis vs nephritis

glomerulonephritis and nephritis both are nouns.

Word	Noun	Adjective	Verb	Adverb
glomerulonephritis	Yes	No	No	No
nephritis	Yes	No	No	No

As nouns, nephritis is a hypernym of glomerulonephritis; that is, nephritis is a word with a broader meaning than glomerulonephritis:

glomerulonephritis: nephritis marked by inflammation of the glomeruli of the kidney; characterized by decreased production of urine and by the presence of blood and protein in the urine and by edema
nephritis: an inflammation of the kidney

Other hypernyms of glomerulonephritis include Bright's disease.

glomerulonephritis (noun)	nephritis (noun)
nephritis marked by inflammation of the glomeruli of the kidney; characterized by decreased production of urine and by the presence of blood and protein in the urine and by edema	an inflammation of the kidney