Held vs Withhold - What's the difference?

As a noun held

is hero.

to keep (a physical object that one has obtained) to oneself rather than giving it back to its owner.

(head)

(hold)

To keep (a physical object that one has obtained) to oneself rather than giving it back to its owner.

To keep (information, etc) to oneself rather than revealing it.

To retain; to keep back; not to grant; as, to withhold assent to a proposition.

* retain

* overwithhold * underwithhold