Fig 1. Allotaxonograph using rank-turbulence divergence for Italian word usage on April 30, 2019 versus April 30, 2020.

For this visualization, we consider the subset of 1-grams that are formed from latin characters. The right hand sides of the rank-rank histogram and the rank-turbulence contribution list are dominated by COVID-19 related terms. See Dodds et al. [26] for a full explanation of our allotaxonometric instrument.