Other names which are only popular for a very short time, are referred to as 'period' names, such as Cheryl. After a boom in popularity they suddenly become very unpopular only a decade or two later. In the 1920s-30s Doris and Jerry were incredibly popular, but are now very rare names to find on a baby. Phyllis, Dennis and Patricia are all 1940s names that went out of fashion in the 1950s.
There is another trend of baby names referred to as 'recycled' names, such as Emma, which were once used, then dipped way down in popularity, but are currently back on the resurgence of popularity 2 to 3 generations later. Recycled names often become popular due to family heritage, e.g. naming a child after a great grandparent, or historical films recreated by Hollywood. Noah from 'The Notebook' and Emma from 'F.R.I.E.N.D.S' are classic examples of recycled names becoming popular again thanks to the media industry. Other recycled names include Amelia (which was the most popular baby girl name for 2013), Grace, Benjamin and Oscar.