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?

Inizia dalle sezioni collegate di Thinking in React, in particolare “Identify Where Your State Should Live” e “Add Inverse Data Flow”, e confronta il modo in cui usano “one-way data flow” e “two-way data binding”. Il lavoro è completato quando la documentazione distingue chiaramente questi concetti oppure spiega la terminologia che ha causato la confusione.