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Welsh croes
Proto-Brythonic *kroɨs (inherited)
Welsh crwys (doublet)
Welsh crog (mention)
Latin crux (derived)
Old Irish cros (cognate)
Undetermined *kruxsā (mention)

English cross (cognate)
Old English cruc (cognate)
Welsh croesair (affix)
Welsh croesffordd (affix)
Welsh croesgad (affix)
Welsh croeshoelio (affix)
Welsh croesholi (affix)
Welsh croestorri (affix)
Welsh croesi (affix)
Welsh crog (mention)
Welsh crwys (doublet)
Faroese krossur (cognate)