What term describes changes made to the Constitution?

The term that describes changes made to the Constitution is "Amendments." An amendment is a formal alteration or addition to the Constitution that changes its original text. The process for amending the Constitution is specifically outlined in Article V of the Constitution, which allows for amendments to be proposed either by a two-thirds majority in both houses of Congress or by a convention called for by two-thirds of state legislatures. Following this, amendments must be ratified by three-fourths of the state legislatures or by conventions in three-fourths of the states.

The other terms do not accurately capture the nature of constitutional changes. Ratifications refer specifically to the approval process required for an amendment to become part of the Constitution, not the amendment itself. Revisions imply a broader and more general change rather than the specific legal process of amending the Constitution. Declarations typically pertain to proclamations or statements and do not encompass the formal procedure or the nature of altering constitutional text. Thus, "Amendments" is the precise term for constitutional changes.