U. S. Code vs legal code

U. S. Code and legal code both are nouns.

Word	Noun	Adjective	Verb	Adverb
U. S. Code	Yes	No	No	No
legal code	Yes	No	No	No

As nouns, legal code is a hypernym of U. S. Code; that is, legal code is a word with a broader meaning than U. S. Code:

U. S. Code: a consolidation and codification by subject matter of the general and permanent laws of the United States; is prepared and published by a unit of the United States House of Representatives
legal code: a code of laws adopted by a state or nation

U. S. Code (noun)	legal code (noun)
a consolidation and codification by subject matter of the general and permanent laws of the United States; is prepared and published by a unit of the United States House of Representatives	a code of laws adopted by a state or nation