Nebula and Thunderhead

Nebula noun - An immense cloud of gas (mainly hydrogen) and dust in interstellar space.

Thunderhead and nebula are semantically related In some cases you can use "Thunderhead" instead a noun "Nebula".

Nearby Words: nebulous, nebulosity, nebular

Thunderhead noun - A rounded projecting mass of a cumulus cloud with shining edges; often appears before a thunderstorm.

Nebula and thunderhead are semantically related in mass of water particles in air topic. Sometimes you can use "Nebula" instead a noun "Thunderhead".