variola vs smallpox

variola and smallpox both are nouns.

Word	Noun	Adjective	Verb	Adverb
variola	Yes	No	No	No
smallpox	Yes	No	No	No

As nouns, variola and smallpox are synonyms defined as:

variola and smallpox: a highly contagious viral disease characterized by fever and weakness and skin eruption with pustules that form scabs that slough off leaving scars

Other synonyms of variola include variola major.

variola (noun)	smallpox (noun)
a highly contagious viral disease characterized by fever and weakness and skin eruption with pustules that form scabs that slough off leaving scars	a highly contagious viral disease characterized by fever and weakness and skin eruption with pustules that form scabs that slough off leaving scars