Asthma symptoms vary from person to person. You may have infrequent asthma attacks, have symptoms only at certain times â such as when exercising â or have symptoms all the time. Asthma signs and symptoms include: 1  Shortness of breath.  Chest tightness or pain.
The definition of an amendment is a change, addition, or rephrasing of something, most often with the intention of improvement. An example of an amendment are the changes made to the U.S. Constitution. 1  a change for the better; improvement.  a correction of errors, faults, etc.
Summary. 1. An amendment means changes made in an already existing agreement. On the other hand, an addendum means including an additional document in the already existing one. 2. While an addendum becomes a part of the legal and binding contract, amendments are only part of a contract until negotiations. 3. An amendment can also be called as correcting a document, improving the document, making alteration or including supplementary information to the first document.