| A | B |
| kingdom | the largest classification category |
| species | group of similar organisms that can breed and produce fertiile offspring |
| taxonomy | the science of classifying or naming things |
| common name | vary among languages and regions |
| binomial nomenclature | system of two-part names |
| genus | a group of closely related species |
| family | group of genera that share many characteristics |
| class | group of similar orders |
| phylum | group of closely related classes |
| Aristotle | classified everything as either a plant or animal |
| Linnaeus | created taxonomic categories |
| homo sapien | genus species for human |
| universal | used and accepted worldwide |