French language Q&A Forum

I know that typically, retourner is used to mean "to go back" and rendre is used to mean "to give back." But on this page: https://www.lawlessfrench.com/grammar/auxiliary-verbs-2/ , which discusses using variable auxiliary verbs in the passé composé, it mentions that retourner can also be used transitively and in that case, it changes its meaning to "to give back." So in the passé composé, can retourner be used in the same way that rendre is?

For example, would both of these be correct?

1. J'ai rendu le livre à la bibliothèque.

2. J'ai retourné le livre à la bibliothèque.

What is the difference in meaning and usage between these two phrases?

Qu’est-ce que c’est un stylo?

Qu’est-ce que c’est q’un stylo?

Why isn't 'une form d'identité' correct?

If you can say "Tu lis seulement le soir" why use "tu ne lis que le soir"

So I was reading one of these examples and I noticed that mieux was used instead of meilleur. I think meilleur would fit better as it compares two nouns (ta voiture and la mienne). Can anyone please clarify? The phrase is as follows:

Bonjour,

I think I need more explanation about 'se balader' with more examples.