methane series vs alkane series

methane series and alkane series both are nouns.

Word	Noun	Adjective	Verb	Adverb
methane series	Yes	No	No	No
alkane series	Yes	No	No	No

As nouns, methane series and alkane series are synonyms defined as:

methane series and alkane series: a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2)

Other synonyms of methane series include alkane, paraffin, paraffin series.

methane series (noun)	alkane series (noun)
a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2)	a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2)