Probably something that is close to the German "Konkurrenz" (edit: which "maps" to concurrency, by the unwritten rules of how English and German map their resp

Probably something that is close to the German "Konkurrenz" (edit: which "maps" to concurrency, by the unwritten rules of how English and German map their respective loan words from Latin, but translates perfectly to competition, but not at all to concurrency)