This article contains information about Illyrian vocabulary. No Illyrian texts survive, so sources for identifying Illyrian words have been identified by Hans Krahe as being of four kinds: inscriptions, glosses of Illyrian words in classical texts, names—including proper names (mostly inscribed on tombstones), toponyms and river names—and Illyrian loanwords in other languages. The last category has proven particularly contentious. The names occur in sources that range over more than a millennium, including numismatic evidence, as well as posited original forms of placenames. The Messapian language, which may or may not be related, does have a small attested corpus, but it is not in this page's scope due to the uncertainty about its relationship to Illyrian.