For some reason, a lot of people think the terms "Feral" and "Stray" are interchangeable. And they're really not.
A "stray" cat is a cat that was born outside, but has some human contact when they were young. Strays are usually skittish but they will come up to humans from time to time. These are usually cats that either were former pets that were abandoned or cats that were born outside from another strays and have had some human contact. They're human contact it general from people either feeding them or when some one might have taken them in for a short while. If you bring a stray in, regardless of their previous human contact, it can take a very long time for them to come to you or warm up to you. We had a stray, and it took her 3 years to even sit on the same couch as someone. Two years after that, she was the friendliest cat ever. She'd jump up on anyone's lap, twine around ankles and beg for pets, and steal your cereal when you weren't looking. We just took it very slow with her, and she eventually showed her full personality and potential.
A "feral" cat is a cat that was also born outside but has had no human contact at all, and usually respond to humans very negatively when they are adults. Feral cats will run as soon as they so much hear a human, and will hiss, growl and possibly attack if you try to approach or if your corner them. You can "rehabilitate" a feral cat, but it takes a very long time. We had a feral cat for 6 years, and the closest she would come to someone was if they were across the room, and only at her dinner time. We had another feral cat, and it took her roughly 4 years, but she eventually let my father pet her. But only very rarely, and she would still tear off at the slightest sound.
Whew. And THAT ladies and gents is what the difference between "feral" and "stray is".
TL;DR Both types of cats were raised outside, but "stray" cats have had some human contact while "feral" cats have had none.
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