
Cornerstone
Metaphorical Usage
 Often used metaphorically to emphasize the importance of a particular element in a system or concept. 
Respect is the cornerstone of effective teamwork.
 Foundation of Beliefs
 Frequently used in discussions about the fundamental principles or beliefs of a system, like a religion or institution. 
Freedom of speech is the cornerstone of our constitution.
 Necessary for Success
 Refers to something essential and indispensable for the success or failure of a particular project or endeavor. 
Hard work is the cornerstone of a successful career.