Na-adjective (keiyodoshi), Nouneasy; simple · easygoing; lighthearted; simplistic; irresponsible; careless; quick (to do)

Na-adjective (keiyodoshi), Nounsimple; simplified · easy; plain

Noun, Suru verb, Intransitive verb(foreign) trade; (international) commerce; importing and exporting

Noun, Suru verb, Transitive verb, Intransitive verbtrade; commerce

Noun(relative) difficulty