Pipe dream and Virtual reality

Pipe dream noun - A conception or image created by the imagination and having no objective reality.

Virtual reality and pipe dream are semantically related. In some cases you can use "Virtual reality" instead a noun phrase "Pipe dream".

Virtual reality noun - A hypothetical three-dimensional visual world created by a computer; user wears special goggles and fiber optic gloves etc., and can enter and move about in this world and interact with objects as if inside it.

Pipe dream and virtual reality are semantically related. Sometimes you can use "Pipe dream" instead a noun phrase "Virtual reality".