split up vs canton

split up and canton both are nouns.

Word	Noun	Adjective	Verb	Adverb
split up	Yes	No	Yes	No
canton	Yes	No	Yes	No

As verbs, canton is a hyponym of split up; that is, canton is a word with a more specific, narrower meaning than split up:

split up (noun)	canton (noun)
an increase in the number of outstanding shares of a corporation without changing the shareholders' equity	a small administrative division of a country

split up (verb)	canton (verb)
become separated into pieces or fragments	divide into cantons, of a country
get a divorce; formally terminate a marriage	provide housing for (military personnel)
discontinue an association or relation; go different ways
separate into parts or portions