espouse vs split up

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

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

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

espouse (verb)	split up (verb)
take up the cause, ideology, practice, method, of someone and use it as one's own	become separated into pieces or fragments
choose and follow; as of theories, ideas, policies, strategies or plans	get a divorce; formally terminate a marriage
take in marriage; married	discontinue an association or relation; go different ways
	separate into parts or portions