1. Starbucks: The name of Starbucks comes from the first mate in Moby Dick, a novel by American writer herman melville. At first, the founder of Starbucks hoped to use this character to represent the company's image and express his determination to provide quality coffee. "Starbucks" is to write the name of this character upside down, which is intended to facilitate memory.

2. McDonald's: The name of this world-famous fast food brand comes from its founders ray kroc and Mac McDonald. Mike McDonald was the founder of the first McDonald's restaurant, and ray kroc was the CEO of McDonald's Company.

Generally speaking, the initials of Starbucks and McDonald's are "M", which is an important part of their brand names.