down spiral vs downward spirale

Some examples from the web:

• And I've fallen down that spiral myself before -
• Prominent family falls into disrepute, scion spirals down.
• Prominent family falls into disrepute, -Scion spirals down...
• And when you went down that spiral staircase, you crossed a threshold, and those memories are locked deep in your mind, but you will be able to unlock them.
• And I've fallen down that spiral myself before - Literally.
• There's no need to go down a keshame spiral.
• We will have a situation which spirals down towards ever meaner and more limited national legislation and application in the different countries which receive refugees.
• So if we imagine a section of our infinite universe - and so I've put down four spiral galaxies, OK -
• Remember they kicked me out for tripping and falling all the way down the spiral?
• A long time ago, people thought that maybe an elliptical galaxy eventually collapses down into a spiral... or maybe eventually spirals all come together... and form an elliptical.
• It's a spiral structure, it moves up and down.
• It's a spiral structure, so it moves up and-down.
• They will gravitationally interact... changing their direction and motion. Eventually, the merged spirals will settle down... to become an elliptical galaxy.
• But, you know, we can either be down and depressed about it and make a spiral of our past mistakes or we can focus on the surfboard company.
• And time itself is winding down in a kind of a spiral that's going faster and faster.
• Demand needs to be created in order to encourage growth and keep unemployment down, so that the kind of downward spiral which occurred in the 1930s can be prevented.
• As a result, we are at risk of finding ourselves in a downward spiral, where the citizens' quality of life is pulled down with it.
• With her eyes set down she peeled the apples skin into a perfect spiral
• You and your voice, no one defends you when others don't understand you're special, you don't fall into the facile spiral dragging others down

Some examples from the web:

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