What is the difference between UPS Expedited, UPS Express Saver and UPS Express service options?

UPS Worldwide Standard: Delivery in 2-5 business days via road to Europe, by the end of the day

UPS Worldwide Expedited: Delivery in 2-5 business days (non-urgent) by the end of the day to more than 70 countries and territories.

UPS Worldwide Express Saver: Delivery in 1-3 business days by the end of the day to more than 215 countries and territories.

UPS Worldwide Express: Delivery in 1-3 business days by 10:30 a.m. or noon., to more than 65 countries and territories.