I am so lost with this post. The only thing I understood is the need for cleaning the shop

How to make flavored booze.

Is everclear just alcohol?

Extremely potent alcohol. Vodka is typically 40 to 47 percent ethanol and the rest is water. Everclear is upwards of 95% ethanol and just 5% water. It’s a solvent. It’s extremely flammable. You could run a vehicle off it. But it might break your hoses though. It’s alcohol strong enough to do productive chemistry with.

I see. Why call it everclear and not just ethanol then? I can get 95% ethanol in pretty much any grocery store here. Is it a specific brand or something?

It is a specific brand. If you send someone to the store to buy ethanol that could result in them buying vodka. Send them to buy Everclear and there is no risk of confusion.