Acrow (pronounced/ˈkroʊ/) is abird of the genusCorvus, or more broadly, a synonym for all ofCorvus. The word "crow" is used as part of the common name of many species. The related term "raven" is not linked scientifically to any certain trait but is rather a general grouping for larger-sized species ofCorvus. The collective name for a group of crows is a "murder".