An abjad is defined as a writing system in which consonants are marked primarily and vowels only secondarily (and not necessarily). In simple terms, an abjad is a writing system comprised of consonants. The vowels can be marked in writing, but are usually not. Arabic and Hebrew are the most common examples of languages that use abjads.
Jawi (جاوي; Acehnese: Jawoë; Kelantan-Pattani: Yawi; Malay pronunciation:) is a writing system used for writing several languages of Southeast Asia, such as Acehnese, Banjarese, Kerinci, Maguindanaon, Malay, Mëranaw, Minangkabau, Tausūg, and Ternate.Jawi is based on the Arabic script, consisting of all of the original 31 Arabic letters, and six additional letters constructed to fit the By creating a 'Phonetic Alphabet' (technically still an abjad) of 22 letters, they modified the scripts for their own comfortability. It was written right to left, although there are some texts written in boustrophedon. Phoenician is the oldest verified alphabet known and is called 'The Mother of all Alphabets'. Both "abjad" and "abugida" are modern terms derived from the first four letters of Semitic alphabets; in the first case Arabic (alif, ba, jim, dal) and in the second case Ethiopic (which is actually a group of languages). These languages no longer make use of this order of letters; though it continues to be used for Hebrew, and for those Indo xlk3S.