longways vs longitudinally

longways is a noun but longitudinally is not a noun.

Word	Noun	Adjective	Verb	Adverb
longways	Yes	No	No	Yes
longitudinally	No	No	No	Yes

As adverbs, longways and longitudinally are synonyms defined as:

Other synonyms of longways include lengthways, lengthwise, longwise.

longways (noun)	longitudinally (noun)
country dancing performed with couples in two long lines facing each other

longways (adverb)	longitudinally (adverb)
in the direction of the length	with respect to longitude
	in the direction of the length
	across time