Concerning the Article  Hinayana Buddhism From Wikipedia as a note  In Thailand where the National Religion is Theravada Buddhism the National Museum in its display concerning the history of the Kingdom of Thailand specifically the Sukkhothai and Ayutthaya periods makes a very clear distinction between Theravada and Hinayana Buddhism listing it as a seperate  religion along with Mahayana Buddhism and Christianitythat was at times under the patronage of the King  It would appear that the Thai Hierarchy of Buddhism has no confusion concerning the use of this term