Communication in the spirit world is done with telepathy which includes feelings and pictures, not any kind of verbal language.
The images on the tarot cards are the language. Pretend you meet someone who does not speak the same language as you do and you had a tarot deck with vivid pictures and images and symbols and you used those pictures to communicate to them.
No language except for the pictures. Here is a message from a man to a woman done with tarot cards... see if you can read the message just with the pictures, not the meaning of the cards traditionally:
-- 
-- 
-- 
