A few neologisms in Laos are unique coinages. Higher-value coinages, suitable for use in trade, were minted in gold, silver, and high-quality bronze. The local Greek coinages are known as "Greek Imperial coins". The coinages "famesque" and "celebutante" are of similar pejorative gist. Neither Rapaport, Pinker, nor Senghas were initially aware of the earlier coinages. The kyat was a denomination of both silver and gold coinages in Burma until 1889. The coins were all modelled on the local coinages. These coinages, written in shared Chinese characters, have then been borrowed freely between languages. Significant historically recent coinages date to scientific terms of the 19th century. The coinages, written in shared Chinese characters, have then been borrowed freely between languages. Thus the overall ratios of the three coinages remained roughly equivalent. In some cases Japanese coinages have subsequently been borrowed back into Chinese, such as . The 2/- was struck under both the first and second coinages of King George V. As noted by Crystal, science is an especially productive field for new coinages. There were other coinages where no contemporary historical sources mentions them.