Blue green and Cerulean

Blue green noun - A blue-green color or pigment.

Cerulean and blue green are semantically related. in sky topic. In some cases you can use "Cerulean" instead an adjective phrase "Blue green".

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

Blue green and cerulean are semantically related. Sometimes you can replace phrase "Blue green" with "Cerulean", this terms are similar.