- Welsh, Cambrian - of or relating to or characteristic of Wales or its people or their language; "the Welsh coast"; "Welsh syntax"
- Cambrian, Cambrian period - from 544 million to about 500 million years ago; marine invertebrates
--1 is a kind of period, geological period
--1 is a part of Paleozoic, Paleozoic era - Welshman, Welsh, Cambrian - a native or resident of Wales
--2 is a kind of European
--2 is a member of Wales, Cymru, Cambria