A popliteal cyst, also known as a Baker's cyst, is a fluid-filled swelling that causes a lump at the back of the knee.
the smallest category is species but from largest to smallest it will be: kingdom Phylum class order family genus and species and you can come up with another word for it to hâ¦elp you with it. so yeh there you go.
Genus is after family but before species. An example of a genus would be canis (canine, dog). Here is a website with information and a table on classification, including genus: http://www.abelard.org/briefings/taxonomy.php. Hope this will help you.