Historical Linguistics and Language Families 7, Exercise 1: types of semantic change

skyline    narrowing (any horizon, then one lined with skyscrapers)
jaw        metonymy (change by nearness: "cheek" to "mandible")
awful      pejoration ("awe-inspiring" to "very bad")
kill       hyperbole / strengthening ("torment" to "slaughter")
astound    meiosis / weakening ("strike with thunder" to "surprise strongly")
terrific   amelioration ("terrifying", "astonishing", "very good")

All are from Wikipedia, Semantic change (Bloomfield's 1933 scheme).