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.
FAMILY  Species is the smallest group of classification.    From largest to smallest, the seven classification are:   Kingdom  Phylum  Class  Order  Family  Ge â¦ nus  Species  .