This is the famous concept list underlying the Dyen, Kruskal, and Black database which was first presented in 1992 but later published electronically in 1997. The database was used for multiple studies and inspired the creation of IELex as a successor database, with an expanded list of 207 concepts. Regarding the intended concepts, the list is entirely identical with Swadesh's 200 item list. Regarding the concept labels, however, the list shows some slight differences. For a ranked version of this list, based on the inferred stability of words in a phylogenetic analysis, see the list by Pagel et al. (2007).