methane series vs alkane

methane series and alkane both are nouns.

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

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

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

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

methane series (noun)	alkane (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)