Abugida

Thai script (อักษรไทย) is the writing system used for the Thai language. It was developed in the 13th century during the Sukhothai period, traditionally attributed to King Ramkhamhaeng. It evolved from earlier Old Khmer scripts, which themselves trace back to ancient Brahmic writing systems of India. Unlike simple alphabets, Thai is an abugida, meaning consonants carry an inherent vowel sound that can be modified using vowel marks placed above, below, before, or after the base letter.

Amharic is written using the ancient Geʽez script, one of the oldest continuously used writing systems in the world. Originating in the Horn of Africa, Geʽez first appeared as a consonant-based script around the 4th century CE, initially used for the liturgical language Geʽez before evolving into a fully developed writing system for modern Ethiopian and Eritrean languages such as Amharic, Tigrinya, and Tigre.