prevalence vs preponderance

prevalence and preponderance both are nouns.

Word	Noun	Adjective	Verb	Adverb
prevalence	Yes	No	No	No
preponderance	Yes	No	No	No

As nouns, prevalence and preponderance are synonyms defined as:

prevalence (noun)	preponderance (noun)
the quality of prevailing generally; being widespread	a superiority in numbers or amount
a superiority in numbers or amount	exceeding in heaviness; having greater weight
(epidemiology) the ratio (for a given time period) of the number of occurrences of a disease or event to the number of units at risk in the population	superiority in power or influence