What are the definitions for? Piety, Plunder, Stygian, Pernicious, Deceit, Base, Indulged, furrows, Suppliant, and Coercion

Piety - quality of being religious

Plunder - steal good from a place usually during the time of war

Stygian - im not sure but i think it has something to do with Darkness/

Pernicious - having a harmful effect

Deceit - the acting or practice of deceiving someone

Base - The structural integrity that something relies on

Furrows - long narrow trench made by a plow

suppliant - someone making a humble plea to someone in authority

Coercion - act of persuading someone to do something