What Counts as a "Dash?"

With the release of the Poppy rework, I have encountered an issue with the terminology that League uses. Up until now there were no implications to it, so it mattered little. However, with Poppy's new W, Steadfast Presence, the issue is relevant.

"Poppy gains bonus movement speed for 2.5 seconds and generates a barrier around her for the duration, causing all enemies who dash within to be knocked down (airborne) and dealt magic damage. This can only happen once per enemy champion."

The use of the word "dash" here, as the title suggests, is what bothers me. What really counts as a "dash?" Somewhere in the game code these abilities are coded to act a certain way. Something determines what is a "dash," what is a "blink," and what is a "jump." Which is which, and how we can we know? I am seeking clarity.

When I bring this up, the first thing people have said is "things that are dashes are dashes, and blinks are not dashes." They often point to Ezreal's E, Arcane Shift, and Flash (the summoner spell) as things that will not get blocked. Luckily, Arcane Shift uses the word "blink."

Flash however, uses the word "teleport." Many argue this is basically "evaporating, moving, and reforming." As in you cannot be targeted while it happening, or a "blink."

What then does that make of Maokai's W, Twisted Advance? "Maokai dashes to the target enemy, becoming untargetable..." So here was have a dash wherein the caster is untargetable. How does Poppy interact with blocking dashes but characters that cannot be targeted? Why isn't this a blink? Is it the travel time? What is an "untargetable dash" coded like?

Vi's Q, Vault Breaker, and her ultimate, Assault and Battery, both use the words "Vi dashes." Can Vi's ultimate be broken by this?

LeBlanc's W, Distortion, reads "LeBlanc dashes to the target location... LeBlanc blinks to Distortion's return pad." Here we would expect it to block the dash in, but allow her to return without issue.

Kha'zix "leaps to the target location," but is a leap a type of dash, or a type of blink? Tristana however is said to "dash to the target location." Is this a "dash?" Or is it a "leap?" Quinn is said to "dash to the target... before leaping back." Is the "leap" a "dash," or a "leap?" Is Quinn's E really a different code category than Tristana's Rocket Jump?

I have seen a Nautilus get blocked by Poppy, however his ability reads "drags both himself and the opponent close together." Is a "drag" a "dash?" Amumu "pulls himself to the target," is a "pull" a "dash?"

Malphite "ferociously charges to a location." Is a "charge" a "blink?" Or is a "charge" more like an "untargetable dash?"

Shyvana "takes flight." Is taking flight a leap? Or is it dashing? Or is it a new category?

Tryndamere "slices," Nocturnes "launches," Rek'sai both "tunnels," and also "travels at incredible speed," and Sion "charges."

Even the Poro King summoner spell uses the word "dash." Just today I was able to use that spell to "dash" to the King himself, as if Poppy wasn't even there. Why is this dash just called "dash," when clearly it is something more. There seems to be a disparity here in the wording, which makes determining what is a "dash" and what is not difficult. I am seeking clarity.

What makes a "dash" be a dash? What makes a "leap" be a leap, and not a dash? What makes a "charge" be a charge, and not a dash, and not a blink? How many categories are there?

I am seeking clarity.