Other examples of this confusion include La Brea Tar Pits and the Canadian oil sands, both of which actually contain natural bitumen rather than tar.
ˈʌðɚɹ ɛɡzˈæmpəlz ʌv ðɪs kənfjˈuːʒən ɪŋklˈuːd lˌæ bɹˈiə tˈɑːɹ pˈɪts ænd ðə kɐnˈeɪdiən ˈɔɪl sˈændz, bˈoʊθ ʌvwˈɪtʃ ˈæktʃuːəli kəntˈeɪn nˈætʃɚɹəl bɪtˈuːmɛn ɹˈæðɚ ðɐn tˈɑːɹ.