| A | B |
| patricians | highest class; government officials |
| equites / equestrians | wealthy class |
| plebeians | common people; majority class |
| liberti et libertae | freedmen and freedwomen; former slaves |
| servi et servae / ancillae | lowest class; slaves; considered property |
| res loquens | term for slaves meaning "talking tool" |
| private slave | slave owned by citizen |
| civilized slave | slave from Greece or Egypt who was well treated |
| peculium | allowance earned by a slave |
| POWs, captives, criminals, born into slavery | sources of Roman slaves |
| process of freeing a slave | manumissio / manumission |
| public slave | slave owned by government |
| barbarian slave | slave from Germany, Spain, Britain, Asia, or Africa who was treated poorly |