Cerulean and Ether

Cerulean adjective - Deep blue like the color of a clear October sky.

Ether and cerulean are semantically related. In some cases you can use "Ether" instead an adjective "Cerulean".

Ether noun - Any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom.

Cerulean and ether are semantically related. Sometimes you can use "Cerulean" instead an adjective "Ether".