To pour is to move a liquid from one place to another.
A popsicle is a frozen liquid. It’s made from juice or sugary water.
The word "liquid" can also be used when talking about an asset (stocks, bonds, real estate, jewelry, etc.) that can be sold for cash. The more liquid something is, the easier it is to sell for cash. If something is not very liquid, it takes a long time to trade it for cash.
That store is liquidating all of its merchandise. (The word "liquidate" is a verb.)
The liquidation of the store’s inventory took a couple months to complete. (The word "liquidation" is a noun.)
A house is not considered to be a liquid asset because it can take a long time to sell and then obtain the cash from the sale. (In this sentence, the word "liquid" is an adjective.)