In modern nomenclature, the first three specifically name hydrocarbons with single, double and triple bonds; while "-one" now represents a ketone.
ɪn mˈɑːdɚn nəmˈɛŋklətʃɚ, ðə fˈɜːst θɹˈiː spəsˈɪfɪkli nˈeɪm hˈaɪdɹəkˌɑːɹbənz wɪð sˈɪŋɡəl, dˈʌbəl ænd tɹˈɪpəl bˈɑːndz; wˈaɪl "wˌʌn" nˈaʊ ɹˌɛpɹᵻzˈɛnts ɐ kˈɛtoʊn.