C2H6 vs paraffin series

C2H6 and paraffin series both are nouns.

Word	Noun	Adjective	Verb	Adverb
C2H6	Yes	No	No	No
paraffin series	Yes	No	No	No

As nouns, paraffin series is a hypernym of C2H6; that is, paraffin series is a word with a broader meaning than C2H6:

C2H6: a colorless odorless alkane gas used as fuel
paraffin series: a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2)

Other hypernyms of C2H6 include hydrocarbon, alkane, alkane series, methane series, paraffin.

C2H6 (noun)	paraffin series (noun)
a colorless odorless alkane gas used as fuel	a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2)