longitudinally vs longwise

longitudinally and longwise both are adverbs.

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

As adverbs, longitudinally and longwise are synonyms defined as:

Other synonyms of longitudinally include lengthways, lengthwise, longways.

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