Both Uses

vary
in
Do You Speak American?
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Some are harmless, like the widespread conviction that Elizabethan, or even Shakespearean, English is still spoken in Appalachia, South Carolina, or Tidewater Virginia—the location varies—but we have a story to put that one to rest.†
Chpt Intr. *

varies = differs; or changes
The speech in New Orleans has origins as varied as the city's celebrated food, which Mark Twain called "as delicious as the less criminal forms of sin.†
Chpt 4

varied = differed; or changed

Definitions:

(1) (vary)
to be different, or to change

Vary is often used to describe small differences or changes--especially about things of the same type. It would be more common to say "The weight of full-grown elephants varies depending upon diet and other factors," than to say "The weight of elephants varies from that of mice."
(2) (meaning too rare to warrant focus)