conjoin vs split up

conjoin is not a noun while split up is a noun.

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

conjoin (noun)	split up (noun)
	an increase in the number of outstanding shares of a corporation without changing the shareholders' equity

conjoin (verb)	split up (verb)
make contact or come together	become separated into pieces or fragments
take in marriage; married	get a divorce; formally terminate a marriage
	discontinue an association or relation; go different ways
	separate into parts or portions