An order is an instruction, not a promise

An order type specifies how a broker should attempt an execution. A market order prioritizes execution at available prices; the eventual price can differ from the displayed quote. A limit order specifies a price boundary but can remain unfilled. The relevant trade-off is not a label that makes every outcome safe, but which uncertainty your instruction leaves open.

A stock stop order becomes a market order when triggered. A stop-limit adds a limit boundary, which can prevent execution when prices move beyond it. Neither creates a guaranteed combination of immediate execution and a chosen price. Broker policies and supported instructions differ, so an example is not a description of every trading platform.

Practice by describing both an intended result and a possible failure mode. Avoid treating an alert as an order: an alert can tell you something happened without placing an exit. A line written in a journal is also not a completed transaction. When reviewing an old position, compare the instruction with the actual order and fill history instead of reconstructing the result from your intention.