WAnatolian hypothesis
WArmenian hypothesis
WCenter versus periphery
WCognate
WComparative method
WEurolinguistics
WFalse cognate
WInkhorn term
WIsogloss
WFrede Jensen (philologist)
WJespersen's Cycle
WKurgan hypothesis
WLanguage death
WLanguage family
WPaleolithic continuity paradigm
WPre-Indo-European languages
WProto-language
WReappropriation
WRosetta Project
WHerbert Schendl
WTree model
WVasconic substrate hypothesis
WWave model