"Paraffin" is a general term and often does not distinguish between pure compounds and mixtures of isomers, i.e., compounds of the same chemical formula, e.g., pentane and isopentane.
"pˈæɹəfˌɪn" ɪz ɐ dʒˈɛnɚɹəl tˈɜːm ænd ˈɔfən dʌznˌɑːt dɪstˈɪŋɡwɪʃ bᵻtwˌiːn pjˈʊɹ kˈɑːmpaʊndz ænd mˈɪkstʃɚz ʌv ˈaɪsəmɚz, ˈaɪ.ˈiː., kˈɑːmpaʊndz ʌvðə sˈeɪm kˈɛmɪkəl fˈɔːɹmjʊlə, ˈiː.dʒˈiː., pˈɛnteɪn ænd ˈaɪsoʊpˌɛnteɪn.