In compound noun phrases, nouns serve as adjective-like modifiers.

By the way, modifying compounds generally must not be plurals, to the extent that even pluralia tantum words like scissors and pants get forced into a pseudo-singular form in order to serve as modifiers, giving us scissor lift and pant leg, which must not be scissors lift and pants leg.

An example of a noun phrase containing many modifying nouns is something like: law school entrance examination grading procedure workflow.

The order among modifying nouns is semantically critical and different from euphonic adjective order; examples in which modifying nouns are permuted, resulting in strange or nonsensical interpretations, or bad grammar, are not valid for demonstrating constraintsa mong the order of true adjectives which independently apply to their subject.

For instance, red, big house is strange and wants to be big, red house. The house is independently big and red.

This is not related to why entrance examination grading procedure cannot be changed to examination entrance grading procedure. The modifiers do not target the head, but each other. "entrance" applies to "examination", not to "procedure" or "grading".