For me are three distinct things
Japanese curry Japanese style of the Indian dish often made from an instant roux package and usually served over Japanese style white rice
Katsu Curry the same dish with a deep fried pork or chicken cutlet put on the the rice before the curry is poured over
Curry rice - no cutlet, the curry is mixed in with the rice before it's served.
For me are three distinct things
Japanese curry Japanese style of the Indian dish often made from an instant roux package and usually served over Japanese style white rice
Katsu Curry the same dish with a deep fried pork or chicken cutlet put on the the rice before the curry is poured over
Curry rice - no cutlet, the curry is mixed in with the rice before it's served.