Are graduation announcments and invitation to the ceremony?
An announcement is to let them know that an event happened or is about to happen. Announcements are generally used to announce the birth of a baby, an elopement, etc. Recipients are not invited to anything. They are commonly used for graduation because tickets to the ceremony are usually limited to a few per graduate. The announcement allows you to inform everyone not getting a ticket of the milestone in your life. An invitation is inviting them to be present for the event. To make it crystal clear for you, I suggest you google as if you need to purchase both. Look at the differences in wording and suggested use from the sites that sell them. In a few seconds, you will see I am correct. By the way — HAPPY GRADUATION!!!