- carthffosiaeth (b): sewage
- cefnwr (g): full-back
- chwys (g): perspiration
- croesawu: to welcome
- cynllun (g): plan
- ehangu: to extend
- enfys (b): rainbow
- galwad (g): call
- llygru: to pollute
- peryglu: to endanger
- sidydd (g): zodiac
- tanddaearol: underground
- traddodiadol: traditional
- twristiaeth: tourism
- tymor (g): term, season
- wynebu: to face