PAD (noun) - People’s Alliance for Democracy; the union of several groups protesting against the Samak, Somchai and Abhisit and now Yingluck governments and which staged large protests against the Thaksin government as well - พันธมิตรประชาชนเพื่อประชาธิปไตย

pad (noun) - a flat surface where a spacecraft or a helicopter takes off and lands - สถานที่ปล่อยจรวดหรือเฮลิคอปเตอร์

pad (noun) - a piece of thick material that you wear in some sports, for example football and cricket, to protect your legs, elbows, etc.