Community cat, also known as outdoor cat, stray cat, alley cat, feral cat, street cat, barn cat and tomcat, are all the same species, Felis catus, the domestic cat. Cats live everywhere. They have lived outdoors alongside humans since before the pyramids. Studies show outdoor cats are as healthy as pet cats and can have the same life span.
Feral cat describes behavior, feral cats are wary of people and live on their own outdoors. Community cats are not adoptable because they are not socialized to humans.