This paper constitutes the fifth chapter of the forthcoming volume "Language in Ethiopia." In an effort to better define the particular linguistic area, the author analyzes phonological and grammatical features that languages in the area have in common. A number of features have been identified as characteristic of the area, and this chapter discusses eight phonological and eighteen grammatical characteristics which constitute significant items within the languages under consideration. Tables illustrate the distribution of these features among the particular languages. A list of references is included. (VM)