re: Do Chairs Exist?

Nouns are a lie, and the objects they refer to are nothing but an arrangement of simple, atomic components exhibiting a set of qualities we expect about that kind of object. Thus, their definition is ambiguous and leads to paradoxes (we humans being messy and imprecise, what a surprise). In fact, these nouns should be considered more like adjectives: chairs would be not a thing per se, but a blob of subatomic particles structured in a chairy way.

If it looks like a duck, swims, and quacks like a duck, then it's not a duck, but it is arranged duck-wise.

A piece of land surrounded by water.
A piece of car contained inside a parking lot.

Do incars exist? Do islands exist? Both are the product of a similar relationship between two entities so the answer to both questions should be the same.