Difference between Lengthwise and Longitudinally

What is the difference between Lengthwise and Longitudinally?

Lengthwise as an adverb is in the long direction of an oblong object. while Longitudinally as an adverb is along lines of longitude, in the direction from pole to pole, meridianally.

We hope you now know whether to use Lengthwise or Longitudinally in your sentence.