Where does “カンボジア王国” come from?

カンボジア王国 (Japanese) comes from Japanese カンボジア, from English Cambodia, from French Cambodge, from Khmer កម្ពុជា, from Pali kamboja, from Sanskrit काम्बोज, from Hindi कम्बोज — Kamboj.

Ancestry of “カンボジア王国”, step by step

カンボジア王国 traces back through two separate lines of ancestry.

via Japanese カンボジア

Step	Language	Word	Meaning
1	Japanese	カンボジア	Cambodia
2	English	Cambodia	—
3	French	Cambodge	—
4	Khmer	កម្ពុជា	Kampuchea
5	Pali	kamboja	—
6	Sanskrit	काम्बोज	born in or coming from Kamboja; a native of...
7	Hindi	कम्बोज	Kamboj

via Japanese 王国

Step	Language	Word	Meaning
1	Japanese	王国	kingdom
2	Middle Chinese	王國	—

Every word from Hindi कम्बोज →Every word from Sanskrit काम्बोज →Every word from Pali kamboja →