Propane is used in propane gas burners and as a fuel for road vehicles, butane in space heaters and disposable cigarette lighters.
pɹˈoʊpeɪn ɪz jˈuːzd ɪn pɹˈoʊpeɪn ɡˈæs bˈɜːnɚz ænd æz ɐ fjˈuːəl fɔːɹ ɹˈoʊd vˈiəkəlz, bjˈuːteɪn ɪn spˈeɪs hˈiːɾɚz ænd dɪspˈoʊzəbəl sˌɪɡɚɹˈɛt lˈaɪɾɚz.