Difference between predation and parasitism?
Parasitism is when something harms you and, predation is when someone kills you for their survival.
Predation and parasitism are similar because they both have one organism feeding on another. The difference is that in predation the organism kills the other ,while in parasitism, the organism feeds on it while letting it live. For example, a lion can't eat an antelope if it lets it live (predation), but a flea can't feed on a dog if the dog isn't alive (parasitism).
The similarity between predation and parasitism is that the predator or the parasite derives its nutrition from some other organism. The difference is that the predator kills that organism while the parasite strategy is not to kill the host organism, but to continue to parasitize it for a prolonged period, which may involve generations of parasites - although it should be noted that parasites do sometimes kill their hosts.