What is the difference between a Smart Scan and a Quick Scan?

What is the difference between a Smart Scan and a Quick Scan?

[Edit: Clarified subject]

Yes, I completely agree. Thanks.

This just another money related add-on in their drive for additional revenues. They told me today that Registry issues identified are not important and that junk files etc can be cleared via cache/history. Surely their normal subscriptions should cover all of this/these issue identified. I am fast losing respect for Norton in it's drive for increased earnings and loss of customer care/focus......

Smart Scan includes Quick Scan

FAQ: Smart Scan
https://support.norton.com/sp/en/ca/norton-360/current/solutions/v138072492

Run Smart Scan to keep you Cyber Safe
https://support.norton.com/sp/en/ca/norton-360/current/solutions/v138049973

Run Smart Scan in Norton Security Protection
https://support.norton.com/sp/en/ca/home/current/solutions/v138206563

Smart Scan or Smart Scam?
https://community.norton.com/en/forums/smart-scan-or-smart-scam