spousal relationship vs wedlock

spousal relationship and wedlock both are nouns.

Word	Noun	Adjective	Verb	Adverb
spousal relationship	Yes	No	No	No
wedlock	Yes	No	No	No

As nouns, spousal relationship and wedlock are synonyms defined as:

spousal relationship and wedlock: the state of being a married couple voluntarily joined for life (or until divorce)

Other synonyms of spousal relationship include marriage, matrimony, union.

spousal relationship (noun)	wedlock (noun)
the state of being a married couple voluntarily joined for life (or until divorce)	the state of being a married couple voluntarily joined for life (or until divorce)