|to differ in a way that can serve to distinguish meanings: The sounds (p) and (b) contrast in the words ?pin? and ?bin?|
|an area whose dialect has exerted influence on the dialects of surrounding areas, as reflected in an geography more or less concentrically surrounding it|
system of groupings (such as "landed gentry" or "rain forests"), usually called types, the members of which are identified by postulating specified attributes that are mutually exclusive and collectively exhaustive-groupings set up to aid demonstration or inquiry by establishing a limited relationship among phenomena. A type may represent one kind of attribute or several and need include only those features that are significant for the problem at hand
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