Offbeat and Pipe dream

Offbeat adjective - Different from the ordinary in a way that causes curiosity or suspicion.

Pipe dream and offbeat are semantically related. In some cases you can use "Pipe dream" instead an adjective "Offbeat".

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

Offbeat and pipe dream are semantically related. Sometimes you can use "Offbeat" instead an adjective phrase "Pipe dream".