argymhelliad, submission
cefnogwr, supporter
cofnod, memorandum
cyfryngu, to mediate
cyllid, revenue
cyngor, council
cynlluniad, planning
cynulliad, assembly
datblygiad, evolution
datganoliad, devolution
deiseb, petition
egwyddor, principle
erthygl, clause
gwaddol, endowment
gwasanaethau, uses
gwirfoddoli, to volunteer
gweinidog, minister
gweithredol, acting (as in acting superintendent)
gwleidyddol, political
gwrthwynebu, to oppose
is-bwyllgor, subcommittee
llywodraeth, government
llywodraethu, to govern
neilltuo, to earmark 
nifer, quantity
pennaethiaid, chiefs
polisïau, policies
pwyllgor, committee