lengthwise vs lengthways

lengthwise and lengthways both are adjectives.

Word	Noun	Adjective	Verb	Adverb
lengthwise	No	Yes	No	Yes
lengthways	No	Yes	No	Yes

As adjectives, lengthwise and lengthways are synonyms defined as:

lengthwise and lengthways: running or extending in the direction of the length of a thing

As adverbs, lengthwise and lengthways are synonyms defined as:

Other synonyms of lengthwise include longitudinally, longways, longwise.

lengthwise (adjective)	lengthways (adjective)
running or extending in the direction of the length of a thing	running or extending in the direction of the length of a thing

lengthwise (adverb)	lengthways (adverb)
in the direction of the length	in the direction of the length