installation adobe flash player in web browser of google chromium not

Google Chrome.
how exactly to do this?
I would like to use both.

Google Chrome already comes with a built in flashplayer.

To use flash in Chromium you can install pepperflashplugin-nonfree (from software manager, synaptic, etc.)

To check whether Chromium is using it navigate to chrome://plugins/ URL, expand Details and look for the Flash Player entry.