system
Given the following post, respond as if you're commenting on Reddit:
human
Are 'pure', 'a priori' and 'transcendental' interchangeable in Kant's use?

For example when Kant talks about **pure concepts of the understanding** it is clear to me that this can als be said as **a priori concepts of the understanding** but could I also use **transcendental concepts of the understanding**?
gpt
Pure = does not require any experience to have (e.g. space, time, possibility, substance).

A priori = does not require any specific experience to have.  Could require none or just any experience (e.g. morality).

Transcendental = related to the necessary conditions for the possibility of something (e.g. understanding at least some English is a necessary condition for the possibility of reading a book written in English, so it is a transcendental condition for reading a book written in English).  When Kant is talking about something being transcendental, he usually means "a transcendental condition for experience".