Professional athletes play a variety of sports. What they do is join a team and play for them until they might be put somewhere otherwise or they play by themselves in individual sports.
Zoologist Study animals and how they act Zoologists may study a particular species or group of species, either in the wild or in captivity.
Pharmacists pharmacists give drugs prescribed by physicians and other health practitioners and provide information to patients about medications and their use. They advise physicians and other health practitioners on the selection, dosage, interactions, and side effects of medications.