English - English
- Adam = Adda
- Adda = Adam
- Albanwr = Scot
- Albanwr = Scotsman
- Almaeneg = German
- Almaeneg = Germanwoman
- Almaenwr = German
- Alpau = Alps
- Alps = Alpau
- America = YrAmerig
- April = Ebrill
- Arglwydd = God
- Atlantic = Iwerydd
- Atlantic Ocean = Iwerydd
- August = Awst
- Australia = Awstralia
- Austria = Awstria
- Awst = August
- Awstralia = Australia
- Awstria = Austria
- Beibl = Bible
- Bible = Beibl
- Bretagne = Llydaw
- Bridgend = Penybont
- Britain = Prydain
- Brithwr = Pict
- British = Prydeinig
- Briton = Brython
- Briton = Prydeiniwr
- Brittany = Llydaw
- Bro Morgannwg = ValeofGlamorgan
- Brython = Briton
- Brython = Welshman
- Brythoneg = Welsh
- Brythoneg = Welshlanguage
- Caerdydd = Cardiff
- Caeredin = Edinburgh
- Caerefrog = York
- Caerludd = London
- Caint = Kent
- Cardiff = Caerdydd
- Christ = Crist
- Christian = Cristion
- Christian = Cristionogol
- Christmas = Nadolig
- Chwefror = February
- Crist = Christ
- Cristion = Christian
- Cristionogol = Christian
- Cymraeg = Welsh
- Cymraeg = Welshlanguage
- Cymreig = Welsh
- Cymru = Wales
- Dafydd = David
- David = Dafydd
- David = Dewi
- December = Rhagfyr
- Dewi = David
- Dofydd = God
- Dolgelly = Dolgelly