Espouse vs. Expound — What's the Difference?

Adopt or support (a cause, belief, or way of life)

Present and explain (a theory or idea) in detail

Marry

To explain in detail; elucidate

To adhere to or advocate

To make known or set forth; present

To take in marriage; marry.

To make a detailed statement

To give (a woman) in marriage.

(transitive) To set out the meaning of; to explain or discuss at length

(transitive) To become/get married to.

(intransitive) To make a statement, especially at length.

(transitive) To accept, support, or take on as one’s own (an idea or a cause).

To lay open; to expose to view; to examine.

To betroth; to promise in marriage; to give as spouse.

To lay open the meaning of; to explain; to clear of obscurity; to interpret; as, to expound a text of Scripture, a law, a word, a meaning, or a riddle.

To take as spouse; to take to wife; to marry.

Add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing;

To take to one's self with a view to maintain; to make one's own; to take up the cause of; to adopt; to embrace.

State;

Choose and follow; as of theories, ideas, policies, strategies or plans;

Take in marriage

Take up the cause, ideology, practice, method, of someone and use it as one's own;