What characteristic feature allows English to use phrases like "a stone house" or "export oil" , where a noun functions directly as an attribute?

Question

What characteristic feature allows English to use phrases like  "a stone house"  or  "export oil" , where a noun functions directly as an attribute?

Accepted Answer

The noun is in the common case, and its function is established solely by its position before the modified noun.

Answer

The noun must always be joined to the main noun using a hyphen.

Answer

The noun becomes a completely substantivized adjective through conversion rules.

Answer

The noun changes its morphological case ending to a possessive form.

Crowdly