Etymology - the origin of words - is a fascinating subject on its own (especially for a word geek like me), but apply it geographically and it throws up a smorgasbord of interesting, out-there and ...

Map O.1 Use of aggregated cellphone records to track mobility week by week during COVID-19 lockdowns in The Gambia, March–May, 2020 http://bit.do/WDR2021-Map-O_1 ...