React-router 4 what is the difference between dynamic and static routes?

what is the difference between dynamic and static routes in react-router 4? ides/philosophy" rel=" nofollow noreferrer "> https://reacttraining.com/rea.
looked at the document and did not see the difference. Please explain to me

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Mar.08,2022

static routing loads all routing modules when you start the application
dynamic routing loads the corresponding components only when you visit this page

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