Afterward refers to something that happens later than what has just occurred.
When we talk or write about a sequence of events, we often use "afterward" to describe the next part. For example, let's say you went on a long hike and finally arrived at a beautiful mountain peak. After reaching the top, you might take some amazing photos. In this case, taking the photos is what happens afterward - it comes later in the timeline of your adventure.
(US) Alternative form of afterwards.
