wedlock vs marital status

wedlock and marital status both are nouns.

Word	Noun	Adjective	Verb	Adverb
wedlock	Yes	No	No	No
marital status	Yes	No	No	No

As nouns, marital status is a hypernym of wedlock; that is, marital status is a word with a broader meaning than wedlock:

wedlock: the state of being a married couple voluntarily joined for life (or until divorce)
marital status: the condition of being married or unmarried

wedlock (noun)	marital status (noun)
the state of being a married couple voluntarily joined for life (or until divorce)	the condition of being married or unmarried