38 Reddit In A nutshell: "My wife wants to raise our 1 year old and our newborn as twins." (archive.is) posted 140 days ago by LastRights 140 days ago by LastRights +38 / -0 18 comments share 18 comments share save hide report block hide replies
If they are exactly one year apart or less they can be referred to as Irish Twins. It's not a common term because babies aren't usually born that close together. It's mostly a conversation piece.
My wife has an Irish twin. They shared a crib together and fought over the same boys.