pre-eclampsia vs toxemia

pre-eclampsia and toxemia both are nouns.

Word	Noun	Adjective	Verb	Adverb
pre-eclampsia	Yes	No	No	No
toxemia	Yes	No	No	No

As nouns, toxemia is a hypernym of pre-eclampsia; that is, toxemia is a word with a broader meaning than pre-eclampsia:

pre-eclampsia: abnormal state of pregnancy characterized by hypertension and fluid retention and albuminuria; can lead to eclampsia if untreated
toxemia: an abnormal condition of pregnancy characterized by hypertension and edema and protein in the urine

Other hypernyms of pre-eclampsia include toxaemia, toxaemia of pregnancy, toxemia of pregnancy.

pre-eclampsia (noun)	toxemia (noun)
abnormal state of pregnancy characterized by hypertension and fluid retention and albuminuria; can lead to eclampsia if untreated	blood poisoning caused by bacterial toxic substances in the blood
	an abnormal condition of pregnancy characterized by hypertension and edema and protein in the urine