end on vs endways

end on and endways both are adverbs.

Word	Noun	Adjective	Verb	Adverb
end on	No	No	No	Yes
endways	No	No	No	Yes

As adverbs, end on and endways are synonyms defined as:

Other synonyms of end on include endwise.

end on (adverb)	endways (adverb)
with the end forward or toward the observer	with the end forward or toward the observer
	in or toward the direction of the ends; lengthwise
	on end or upright