Assuwa, roughly most part of West Asia Minor / Anatolia, it was a confederation (or league) of 22 ancient Anatolian states that formed some time before 1400 BC (may have been the origin of the name Asia)
Arzawa, roughly part of West Asia Minor / Anatolia, it was formed in the second half of the 2nd millennium BC (roughly from the late 15th century BC until the beginning of the 12th century BC). Contemporary to Assuwa in Western Anatolia (capital was known as Apasa by the Hittites, later called Ephesos by the Greeks).
Included several of the same regions or lands as the Assuwa League but not the ones that are mentioned below:
Known western Anatolian late-Bronze Age regions and/or political entities which, to date, have not been cited as having been part of the Arzawa complex are:
Hittite Arzawa / Hittite Assuwa, formed by three western provinces (after Hittite Empire conquest), roughly most of Asia Minor / Anatolia, it was almost identical to the "Assuwa League" lands or regions, more than to Arzawa, that seems to have been smaller and less powerful.
Hatti / Land of Hatti (Broad Sense - Central Anatolia including the lands that were Hittite or Nesite speaking at the height of the Hittite Empire and was also used as synonym of Hittite Empire and countries and regions, lands, ruled by it)
Hatti / Land of Hatti (Narrow Sense - Ancient country or land of Central Anatolia defined by the Halys river bend, called Marassanta or Marassantiya by the Hittites) (it was the core land of the Hittite empire and was also used as synonym of Hittite Empire and countries and regions ruled by it) (later it was part of Cappadocia and West Pontus)
Katerra Udnē ("Lowland" in Hittite) (Plateau of Central Anatolia) (later mostly part of Cappadocia and may have included some parts of Lycaonia or not, Lycaonia was mostly Luwian speaking or to a more closely related language and not Hittite / Nesite speaking) (German name on the map: Unteres Land) (Katerra Udnē was possibly related to the name Katta Peda - "Place Below" or "Place Down", from katta - "below" or "down", and peda - "place", that originated the name Cappadocia through the possible phonetic change - Katt(a)-peda > *Kat-peda > *Kat-pata > *Kat-patu + ka > Kat-patuka > *Kappaduka, borrowed to Greek as Kappadokía)
Purushanda (an important city in Katerra Udnē - Lowland)
Nesa, original land of the Hittites / Nesites who called themselves by the name Nesumines - "(people) from Nesa" and their language Nesili - "(language) from Nesa". "Nesa" was the name not only of a city but also of a region or country south of the middle Marassantiya / Halys river course.
Zalpa / Zalpuwa city, a yet undiscovered Bronze Age Anatolian city that was the capital of the region of the same name.
Kaska / Kaska Land (East Pontus in the Classical Age) (country or region of the Kaska people, they could be descendants or related to the Hattians)
Luwiya / Luwa (seems to have included most part of Southern and Southeastern Anatolia that was Luwian speaking) (it was related but not identical to Assuwa and its contemporary Arzawa in Western Anatolia)
Kizzuwadna / Kizzuwatna (Luwian: Kizz Uwadna / Kizz Uwatna - "Land on this Side", from kizz - "on this side" and uwadna or uwatna - "land" or "country"; Hittite: Kez Udnē - "Land on this Side", from kez - "on this side" and udnē - "land" or "country") (later Cilicia Pedias / Cilicia Campestris in the Classical Age)
Tabal (region or country and also post-HittiteLuwian state in the first millennium BC) (Tuwana > *Tuwan(a) > *Tuwan > *Tuban > *Tubal > Tabal) (this name may have been the inspiration for the Old Hebrew name Tubal, son of Japheth, son of Noah, in the Bible)
Tarhuntassa city, Tarhuntas Assa - "Tarhunt city" (one of the capitals of Hittite Empire in a country or region of the same name)
Zanta Uwadna - Plateau of Central Anatolia. Luwian cognate and equivalent to HittiteKaterra Udnē - "Lowland" in Hittite (may have included some parts or most part of Lycaonia or not, Lycaonia was mostly Luwian speaking or to a more closely related language and not Hittite / Nesite speaking) (German name on the map: Unteres Land)
Cappadocia (a significant part roughly corresponding to ancient "Land of Hatti" or Hatti) (name possibly derived from the HittiteKatta Peda- - Place Below or Place Down, from katta - below or down and peda - place; possible phonetic change - Katt(a)-peda > *Kat-peda > *Kat-pata > *Kat-patu + ka > Kat-patuka > *Kappaduka, borrowed to Greek as Kappadokía)
Galatia (named after the Galatians, a Celtic people, that arrived in Central Anatolia by the early 3rd century BC, it didn't exist until then and was made by Galatian conquests of parts of Phrygia and Cappadocia)
Pieria (part of ancient Palistin) (although administratively in Roman Syria on the border area, it was on the west slope of the Amanus mountains, and sometimes it was included in Cilicia Pedias)
Note: Over time the regions did not always were the same and had the same size or the same borders and sometimes included different subregions, districts, divisions or parts or were united with others.
The names of many regions ended in "e" [e] that was the Eastern Greek (AtticIonicAncient Greek) equivalent to the Western Greek (Doric Greek) "a" [a] and also to the Latin "a" [a].
In Ancient Greek the "ph" represented the consonants p [p] and h [h] pronounced closely and not the f [f] consonant.
In Ancient Greek the "y" represented the vowel [y] (ü) and not the semivowel [j] or the vowels [i] or [I].