根本原理

こんぽんげんり

noun

•

fundamental (basic) principles, fundamentals, ground rules(yojijukugo)

根	root, radical, head (pimple)
本	book, present, main, origin, true, real, counter for long cylindrical things
原	meadow, original, primitive, field, plain, prairie, tundra, wilderness
理	logic, arrangement, reason, justice, truth