Norf'k uses both the numeral 'one' and 'a' as an indefinite article. 'A' is preferred when preceding mass nouns such as bread or sugar, which do not take the indefinite article in English, and is used in acrolectal Norf'k with most other nouns. It is not clear whether there is a semantic difference between 'a' and 'one', though it could have something to do with specificity.