rue vs thank

rue

• Any of various perennial shrubs of the genus Ruta, especially the herb Ruta graveolens (common rue), formerly used in medicines. 

• To repent of or regret (some past action or event); to wish that a past action or event had not taken place. 

thank

• To feel gratitude or appreciation toward. 

• To express gratitude or appreciation toward. 

• To credit or hold responsible.