Meaning : A feeling of strong eagerness (usually in favor of a person or cause).
They were imbued with a revolutionary ardor.
He felt a kind of religious zeal.
Meaning : Excessive fervor to do something or accomplish some end.
He had an absolute zeal for litigation.
Meaning : Prompt willingness.
Readiness to continue discussions.
They showed no eagerness to spread the gospel.
They disliked his zeal in demonstrating his superiority.
He tried to explain his forwardness in battle.