Ways of expressing the number 0

0 = nil in football and other sports, for scores of 0 (AmE: zero or nothing)

0 = love in tennis

0 = zero in temperatures to refer to freezing point (0° Celsius, 0° Fahrenheit)

0 = nought in mathematics (AmE: zero)

0 = oh for telephone numbers

0 = oh (or zero) for flight numbers

Notes: 1. We use zero to express some numerical values such as temperatures, taxes, and interest rates. 2. We can pronounce "0" like the letter "o", when we are reading out numbers figure by figure (e. g. telephone number, flight number, credit card number, etc.)