How do we describe this kind of distribution with a small dip on the left?

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I have this distribution.

Now, what I am unsure about, is how to describe the left side of the distribution, specifically, where it shows a small increase at the start, but then drops.

Like, what special terms do we use to describe these kinds of things? Or, if there are multiple things like this, what do we say to explain it?

Any assistance is much appreciated - thanks!

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