The differences are:
. anticipatory anxiety
. belief that no-one likes them, whatever the evidence to the contrary
. unreasonable assumptions about what will happen
. anticipatory anxiety
On this website there are many threads about having to make a presentation next week, and not being able to stand the stress etc.
. belief that no-one likes them, whatever the evidence to the contrary
A shy person can relax in a benign environment. Someone with social phobia is usually not paying enough attention to the other person to notice, and any clues which are picked up that the person does like them are dismissed as a misperception. Often on this website people say they can not understand why someone they know is their friend.
. unreasonable assumptions about what will happen
Often on this website people explain that the reason they tend not to speak, for example, is because they assume others will criticise it. On occasions when they do speak, and the prediction does not come to pass, they put it down to chance or some other factor.