Jet and Pitch black

Jet adjective - Of the blackest black; similar to the color of jet or coal.

Pitch black and jet are semantically related In some cases you can replace phrase "Pitch black" with "Jet", this terms are similar.

Pitch black noun - A very dark black.

Jet and pitch black are semantically related in black topic. You can use "Jet" instead an adjective phrase "Pitch black", if it concerns topics such as sooty, very dark in color.