They can be different in that server rendered ones are materialized solely on the server, without any context to the browser environment and unable to have any

They can be different in that server rendered ones are materialized solely on the server, without any context to the browser environment and unable to have any interactivity. It's just HTML when it's SSR'd. However, when "hydrated" or when that component is rendered on the client (browser), it can ship with more interactivity and/or manipulation by its JS.