This is the 1639th most frequent Catalan word.
online
Connected to or available through the internet.
Here 'online' describes the nature of the course, indicating that the content or structure is delivered via the internet.
Estic mirant un curs online sobre programació.
I am watching an online course about programming.
In this sentence, 'online' refers to the medium where the products are available, specifically indicating they are accessible through the internet.
La botiga ofereix productes exclusius online.
The store offers exclusive products online.
Here 'online' describes the type of connections, specifying that the interactions happen via internet-enabled platforms.