Phantasma and Rainbow

Phantasma noun - Something existing in perception only.

Rainbow and phantasma are semantically related. in dream topic. In some cases you can use "Rainbow" instead a noun "Phantasma".

Rainbow noun - An arc of colored light in the sky caused by refraction of the sun's rays by rain.

Phantasma and rainbow are semantically related. Sometimes you can use "Phantasma" instead a noun "Rainbow".