Discernment (noun)
Meaning: Ability to judge wisely
Usage: Good leaders show strong discernment.
Forms:
Discern (verb): He can discern right from wrong.
Discerned (past): She discerned the mistake quickly.
Discerning (adj): He is a discerning reader.
Zeal (noun)
Meaning: Great enthusiasm
Usage: She worked with great zeal on the project.
Forms:
Zealous (adj): He is a zealous supporter.
Zealously (adv): They defended the idea zealously.