What do you call and exponential increase on a logarithmic scale

Seriously, what do you call it?

Normally, exponential increases (x^2) on a standard scale have a constant linear (x) slope on a logarithmic scale.

This chart shows an exponential growth in price ... on a logarithmic scaled price axis.
Beyond Technical AnalysisexponentialgrowthGMELOGARITHMIClogscaleTrend Lines

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