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Use "doublets" in a sentence
"Such similar records are often called doublets, and the question of identity or distinctness can be answered only after a special study of each case."
"Doublets A.thony A. A.len London Early in his studies the beginner in English etymology is sure to encounter the fascinating and instructive class of word-pairs commonly known as doublets; in fact they offer an easy avenue of approach to that science."
""doublets" -- a term critics are so free to use -- or proof of two parallel and not quite harmonious sources."