The Sami people (also known as the Sami or the Saami) are a Finno-Ugric people inhabiting Sapmi, which today encompasses large parts of Norway and Sweden, northern parts of Finland, and the Murmansk Oblast of Russia. The Sami have historically been known in English as the Lapps or the Laplanders, but these terms can be perceived as derogatory. Sami ancestral lands are not well-defined. Their traditional languages are the Sami languages and are classified as a branch of the Uralic language family.
Lapp
The word Lapp can be traced to Old Swedish lapper, Icelandic lappir (plural), probably of Finnish origin; compare Finnish lappalainen "Lapp", Lappi "Lapland" (possibly meaning "wilderness in the north"), the original meaning being unknown. It is unknown how the word Lapp came into the Norse language, but one of the first written mentions of the term is in the Gesta Danorum by 12th-century Danish historian Saxo Grammaticus, who referred to the two Lappias, although he still referred to the Sami as (Skrid-)Finns. In fact, Saxo never explicitly connects the Sami with the "two Laplands". The term "Lapp" was popularized and became the standard terminology by the work of Johannes Schefferus, Acta Lapponica (1673), but was also used earlier by Olaus Magnus in his Description of the Northern people (1555). There is another suggestion that it originally meant "wilds".  The Sami are often known in other languages by the exonyms Lap, Lapp, or Laplanders, although these are considered as derogatory terms. while others accept at least the name Lappland. Variants of the name Lapp were originally used in Sweden and Finland and, through Swedish, adopted by many major European languages: English: Lapps; German, Dutch: Lappen; French: Lapons; Greek: Lapones (Lapones); Hungarian: lappok; Italian: Lapponi; Polish: Laponczycy; Portuguese: Lapoes; Spanish: Lapones; Romanian: laponi; Turkish: Lapon. In Russian the corresponding term is lopari (lopari) and in Ukrainian lopari (lopari).  In Finland and Sweden, Lapp is common in place names, such as Lappi (Satakunta), Lappeenranta (South Karelia) and Lapinlahti (North Savo) in Finland; and Lapp (Stockholm County), Lappe (Sodermanland) and Lappabo (Smaland) in Sweden. As already mentioned, Finn is a common element in Norwegian (particularly Northern Norwegian) place names, whereas Lapp is exceedingly rare.  In the North Sami language, lahppon olmmos means a person who is lost (from the verb lahppot, to get lost).  Terminological issues in Finnish are somewhat different. Finns living in Finnish Lapland generally call themselves lappilainen, whereas the similar word for the Sami people is lappalainen. This can be confusing for foreign visitors because of the similar lives Finns and Sami people live today in Lapland. Lappalainen is also a common family name in Finland. As in the Scandinavian languages, lappalainen is often considered archaic or pejorative, and saamelainen is used instead, at least in official contexts.
What is Lapp?
The word Lapp can be traced to Old Swedish lapper, Icelandic lappir (plural), probably of Finnish origin;
The word Lapp can be traced to Old Swedish lapper, Icelandic lappir (plural), probably of Finnish origin;