What crow languages are there?

Crow characters include: old crow, graffiti, opium, paper crow, crow mountain, crow chick, crow cicada, fire crow, crow essence, crow cilia, crow magpie, green crow, crow bun, crow grandson, crow room, crow, hidden crow, crow stork, crow fork, crow yellow, kindness, crow army, faint crow, and so on.

Crow, a bird, is also a bird name. A large crow usually bright black. -"Zhuangzi's Theory of Homogeneous Things".

It can also be an idiom, such as: silence; A crow's nest gives birth to a phoenix (a metaphor for a mediocre family giving birth to excellent children) is black. Such as crow green (the color of crow feathers. That is, black with purple and green; Also known as crow green note).