This work, divided into two volumes, is the study of the history of words in the Austronesian (An) languages--their origin in Proto-Austronesian (PAn) or at later stages and how they developed into the forms that are attested in the current An languages. A study of their history entails the reconstruction of the sound system (phonology) of PAn and an exposition of the sound laws (rules) whereby the original sounds changed into those attested...