bare hill – moel, foel
black, dirty – du, ddu
bog – cors
boundary – ffin
bridge – bont
brook – nant
castle – castell
causeway, old road – sarn
church – eglwys
church, holy place – llan
country – gwlad
county or shire – sir
crest, summit, ridge – crib
farm – fferm
fort, city – dinas
fort, stronghold – caer, gaer
glen – glyn
great, big – fawr, mawr
grove, bush – llwyn
hall, court – llys
hall, mansion – plas
hamlet, town – tre, tref
head, end, source – blaen
head, top, end – pen
hedge, ditch, dyke – clawdd
hill – bryn
hollow, valley – pant
home – cartref
house – ty
island – ynys
lake – llyn
martyr – merthyr
meeting of rivers – cymer
moor, high pasture – gwaun, waen
mountain – fynydd, mynydd
pass – bwlch
peak, crest – ban, fan
railway – rheilffordd
red – coch, goch
ridge – cefn
river – afon
river mouth – aber
road – heol
rock – craig, graig
small, little – bach, fach
stone, rock – carreg, maen
street – ystryd
summer dwelling – hafod
upper, higher, highest – uchaf
valley – cwm, dyffryn
valley floor – ystrad
village, homestead – pentre
white – gwyn
winter dwelling, home – hendre
wood – coed