A felony is a serious crime in the common law countries. The term originates from English common law where felonies were originally crimes which involved the confiscation of a convicted person's land and goods; other crimes were called misdemeanors.
Many common law countries have now abolished the felony/misdemeanor distinction and replaced it with other distinctions such as between indictable offences and summary offences. A felony is generally considered to be a crime of "high seriousness", while a misdemeanor is not. A person convicted in a court of law of a felony crime is known as a felon.
In the United States, where the felony/misdemeanor distinction is still widely applied, the federal government defines a felony as a crime punishable by death or imprisonment in excess of one year. If punishable by exactly one year or less, it is classified as a misdemeanor. The individual states may differ in this definition, using other categories as seriousness or context.