Difference between Rue and Regret

Rue

Part of speech: noun

Definition: Repentance, regret. Pity, compassion. Any of various perennial shrubs of the genus Ruta, especially the herb Ruta graveolens, formerly used in medicines.

Part of speech: verb

Definition: To cause to repent of sin or regret some past action. To cause to feel sorrow or pity. To repent of or regret (some past action or event); to wish that a past action or event had not taken place. To feel compassion or pity.

Regret

Part of speech: verb

Definition: To feel sorry about (a thing that has happened): to wish that a thing had not happened, that something else had happened instead.To feel sorry about (any thing).

Part of speech: noun

Definition: The instance of such an emotion.

Example sentence: Speak when you are angry - and you'll make the best speech you'll ever regret.