Does the constitution specify 2 ways to propose and ratify an amendment?

Yes, the U.S. Constitution specifies two methods for proposing amendments in Article V: Congress can propose an amendment with a two-thirds majority vote in both the House of Representatives and the Senate, or a national convention can be called by two-thirds of state legislatures. For ratification, an amendment must be approved by three-fourths of the state legislatures or by conventions in three-fourths of the states.