espouse vs espousal

espouse is not a noun while espousal is a noun.

Word	Noun	Adjective	Verb	Adverb
espouse	No	No	Yes	No
espousal	Yes	No	No	No

espouse (noun)	espousal (noun)
	the act of accepting with approval; favorable reception
	archaic terms for a wedding or wedding feast
	the act of becoming betrothed or engaged

espouse (verb)	espousal (verb)
take up the cause, ideology, practice, method, of someone and use it as one's own
choose and follow; as of theories, ideas, policies, strategies or plans
take in marriage; married