There are many names for the number 0 in English and related concepts, and there are concomitant names for the decades whose tens column contains the number 0. The names for the number 0 include "zero", "cipher", "null", "naught", "nought", "love", "duck", "nil", "zilch", "zip", (the letter) "o" (often spelled "oh"), "aught", and "ought". There are various subtleties of usage amongst them all.
Some usage of these terms is driven by a desire to maintain an explicit distinction between digit zero and letter O, which, because they are both usually represented graphically in English orthography (and...