There are 7 card types in Frenopolis. A card's type is indicated by the symbol on the bottom of the card which contains its stat. There are no subtypes.

They are:
1.) Entity (like creatures or monsters)

2.) Structure (like artifact-sorcery-walls or perma defense mode monsters)

3.) Meme (like instant sorceries or trap cards)

4.) Energy (like duel masters mana)

5.) Avatar (like a commander)

6.) Story (like a field spell)

7.) Fren (like a xyz monster)

These comparisons are rough, and I will explain them each in more detail below.