febrility vs pyrexia

febrility and pyrexia both are nouns.

Word	Noun	Adjective	Verb	Adverb
febrility	Yes	No	No	No
pyrexia	Yes	No	No	No

As nouns, febrility and pyrexia are synonyms defined as:

febrility and pyrexia: a rise in the temperature of the body; frequently a symptom of infection

Other synonyms of febrility include febricity, fever, feverishness.

febrility (noun)	pyrexia (noun)
a rise in the temperature of the body; frequently a symptom of infection	a rise in the temperature of the body; frequently a symptom of infection