nonparallel vs in series

nonparallel and in series both are adjectives.

Word	Noun	Adjective	Verb	Adverb
nonparallel	No	Yes	No	No
in series	No	Yes	No	No

As adjectives, nonparallel and in series are synonyms defined as:

nonparallel and in series: of or relating to the sequential performance of multiple operations

Other synonyms of nonparallel include serial.

nonparallel (adjective)	in series (adjective)
of or relating to the sequential performance of multiple operations	of or relating to the sequential performance of multiple operations
(of e.g. lines or paths) not parallel; converging