Psychiatric and substance abuse hospitals employed only 3,210 security guards, according to the BLS, less than 8 percent of all hospital guards. However, they were the best paid in the industry, earning an average of $35,000, or $16.83 an hour.
So the basic differences between Cavalry, Artillery and Infantry are as follows. 1  Infantry: Infantry refers to the soldiers on foot. 2  Cavalry: It generally means mounted soldiers. 3  Artillery: It uses large and long ranged weapons.
The difference between a vertebrate and an invertebrate is that a vertebrate is an animal with a backbone and an invertebrates is an animal without a backbone.2 people found this useful. Edit.ome of the differences are, that Invertebrates tend to be small and slow moving. Vertebrates, on the other hand, are stronger, faster and most times, bigger. Also Vertebrat â¦ es have more highly developed nervous systems, giving them the chance to understand better, and faster than Invertebrates.