Where does “coince” come from?

coince (Middle English) comes from Middle English coin, from Middle English coyn, from Old French coigne, from Latin cuneus, from Proto-Indo-European h₂ḱū, from Proto-Indo-European h₂eḱ- — sharp.

Ancestry of “coince”, step by step

coince traces back through two separate lines of ancestry.

via Middle English coin

StepLanguageWordMeaning
1Middle EnglishcoinAlternative form of coyn; quince
2Middle EnglishcoynA wedge; The impression or imagery on a coin; an...
3Old Frenchcoignewedge, cornerstone, die for stamping
4Latincuneuswedge, wedge shape; troops arrayed in a wedge...
5Proto-Indo-Europeanh₂ḱūsting
6Proto-Indo-Europeanh₂eḱ-sharp

via Middle English coins

StepLanguageWordMeaning
1Middle Englishcoins
Every word from Proto-Indo-European h₂eḱ-Every word from Proto-Indo-European h₂ḱūEvery word from Latin cuneus
coince — Etymology, Origin & Word History | Etymology Explorer