The definition of one-way data flow is confusing

I was researching about data binding concept.
then found followings.

1. one-way data binding
2. two-way data binding

What I understand about data binding is about how Data and View are affecting each other.

1. one-way data binding is using event-listener function to achieve View to Data Data to View together.
   (i.e, displaying input value in <p> tag.)
2. two way data binding is using the binding syntax (not using event-listener) and it can achieve View to Data Data to View
   (i.e, displaying input value in <p> tag.)

but when I read the official React document on react.dev.

It talks about one way data flow which is a bit confusing expression then it says this concept is about top to bottom parent to child. (which is completely different from the definition of one-way data binding).

// from the link below.
Remember: React uses one-way data flow, passing data down the component hierarchy from parent to child component.

https://react.dev/learn/thinking-in-react#step-4-identify-where-your-state-should-live

then when it talks about two way data binding the document brings displaying the input value on screen.
Which is not related to topic about Top to Bottom.

// from the link below.
React makes this data flow explicit, but it requires a little more typing than two-way data binding. If you try to type or check the box in the example above, you’ll see that React ignores your input. 

https://react.dev/learn/thinking-in-react#step-5-add-inverse-data-flow

I feel like this concept needs to be updated to clarify the concept of data binding.
or if the document content is correct, Can someone explain what I am missing or confused about this document?

Beginne mit den verlinkten Abschnitten von Thinking in React, insbesondere „Identify Where Your State Should Live“ und „Add Inverse Data Flow“, und vergleiche, wie sie „one-way data flow“ und „two-way data binding“ verwenden. Erledigt ist die Aufgabe, wenn die Dokumentation diese Konzepte klar voneinander unterscheidet oder die Terminologie erklärt, die die Verwirrung verursacht hat.