| A | B |
| Herbivore | a consumer that eats only producers (eats only plants) |
| Omnivore | a consumer that eats both producers and comsumers (eats both meats and plants) |
| Carnivore | a consumer that eats only other consumers (meat-eater) |
| Predator | the eater or hunter in the relationship |
| Prey | the organism being eaten or hunted in the relationship |
| Grazer | the herbivorous organism eating the producers |
| Symbiosis | a relationship where two organisms live together |
| Mutualism | a relationship where both organisms benefit |
| Commensalism | a relationship where one organism benefits and the other is unaffected |
| Parasitism | a relationship where one organism benefits and the other (the host) is harmed |