"Compact"
Reference: Blackstone's Commentaries, "View of the Constitution of the United States," Section 1 - Nature of U.S. Constitution; manner of its adoption as annotated by St. George Tucker, William Young Birch and Abraham Small, c1803, on the nature of a "compact":
"It is a compact; by which it is distinguished from a charter, or grant; which is either the act of a superior to an inferior; or is founded upon some consideration moving from one of the parties, to the other, and operates as an exchange, or sale: but here the contracting parties, whether considered as states, in their politic capacity and character; or as individuals, are all equal; nor is there any thing granted from one to another: but each stipulates to part with, and to receive the same thing, precisely, without any distinction or difference in favor of any of the parties....."
