Samurai and kendo

Kendo is sportified Japanese sword bamboo swords (shinai) and protective armour (bōgu). Samurai uses real sharpened swords.
In the following videos, you can see how they are related and yet different.

Scrub to 1 minute 26 second to see the actual cut

Scrub to 3 minute 30 second for training and 5 minute 36 second for sparring

Kendo versus escrima (double stick)

Exercise
Tell me what you see and learn.