what causes language changes?
the difference of internal language and grammar created throughout generations
what is a proto language?
2 languages are related if they’ve descended from a common ancestor speech community (this is the proto language)
what are cognates and cognate words?
words/languages that share common origin
what is the comparative method?
allows hypotheses about properties of proto-languages even when they left no direct evidence in the written record
whats dialect continuum?
gradual accumulation of differences over a geographical area
what is change from above?
prestigious variants that spread downward from the upper classes
what is change from below?
casual speech variants which spread upward