In translating a piece of text, the nature of the piece and the target audience should help you decide whether a term or a word in general language would best suit the context of the work.
Wrth gyfieithu darn o destun, dylai natur y darn a’r gynulleidfa darged eich helpu i benderfynu ai term ynteu gair neu ymadrodd o’r iaith gyffredinol fyddai’n taro deuddeg yn y cyd-destun.