| A | B |
| Classification | grouping organisms based on similarities |
| Taxonomy | science which names and groups organisms |
| Binomial Nomenclature | giving two names to an organism |
| Genus | first name in the scientific name |
| Family | taxa smaller than an order |
| Order | taxa which groups families together |
| Species | second part of the scientific name |
| Class | made of many orders |
| Phylum | taxa made of many classes |
| Kingdom | Includes many phyla or divisions |
| Division | used in Plant Kingdom only |
| Homologous | structures that have evolved similarly |
| Analogous structures | sturctures that are used the same way but evolved differently |
| Structural similarity | organisms would look much alike |
| Linneaus | develop modern way to name organisms |
| Grouped organisms by evolution similarities | Linneaus |
| Aristotle | classified animals by where they live |
| Common name | name used by ordinary people |
| Genus species | scientific name |
| Largest taxon | kingdom |
| Mammalia | man's class |
| Homo | man's genus |
| sapiens | man's species |
| Chordata | man's phylum |
| Animalia | man's kingdom |
| Primate | man's order |