Octopi aren’t fish.
Do you mean collective nouns ?
Or just “generic groups”, as in animal, plant, rock, fungi, lichen ?
Maybe group words that aren’t as specific as collective nouns and not as generic as groups:
- canine
- marsupial
- mammal
- primates
- carnivores
- vertebrates
- reptiles
- birds
Does that help?
I just thought it looked cool.