Learn English – Are “disgraceful” and “ungraceful” two different kinds of negations

Different is the broadest and most vague expression of difference, but generally it means a difference of a quality of two or more things. "They were of different __"

Divergent suggests two things which are "moving" but apart from each other. "They had divergent philosophies on the importance of the State."

Disparate tends to suggest quite a wide gap. Often in the context of things scattered, or quite far apart. Incomparable. "They had disparate views on the necessity of cinema."

Distinct merely indicates that two qualities or objects are not the same. They may be "similar, but distinct" or they may be "quite distinct" (i.e. you'd have to be a moron to not notice the difference).

Each has a correct usage. When in doubt go for "difference". It covers most of the ground and there's no point in using a big word if you have to ask about it.

A little shop set up by the road side (and roofless, or with a tent-style roof, or in a cart) is known as a street vendor. They are very common in large cities. I found a good link defining this: What Is a Street Vendor?. Quoted from this source:

Street vendors are businesspeople who sell their wares in the open air rather than in a shop or store. In many cases, the vendor either has a small stand that can be secured when not in operation, or makes use of a cart that can be removed from the street at the end of the business day. Sometimes referred to as a peddler, the street vendor is commonly found in metropolitan areas, outdoor conventions and events, and sometimes at public beaches.