Three crows knight's hawk, hound and mistress. "Three crows" are also often implicated in the parliament of crows where three crows preside over a larger number of crows and sit in judgment over the fate of another crow. The verdict sometimes results in a crow being set upon by all the other crows. This behavior and their tendency to show up at battlefields and the scenes of murders may be explain the collective term for crows as being a 'murder of crows'. "Three crows" also refers to a tale of three crows (a father, mother and son crow) bothering the king. There
Mass noun usage dates back to Old English. In 2008, Tesco changed supermarket checkout signs reading "Ten items or less" after complaints that it was bad grammar; it switched to "Up to ten items" rather than "Ten items or fewer" at the suggestion of the Plain English Campaign. There is often confusion about the two different concepts of "collective noun" and "mass noun". Generally, collective nouns are not mass nouns, but rather are a special subset of count nouns. However, the term "collective noun" is often used to mean "mass noun" (even in some dictionaries), because users conflate two different kinds of