Is it possible to rename the word "Categories" to "Channels"?

[omarfilip]

You can customize any text in Discourse.

See:

Customize text in Discourse

This is a guide for customizing text in Discourse via the admin interface, enabling changes to various UI elements. Required user level: Administrator In Discourse, you can customize all of the text via the admin interface. This can be useful for tailoring the user experience to better fit the particular tone or branding of your community. Summary This guide will cover: Accessing the text customization interface Editing text strings Identifying translatio…