Bile alum is salt.
-Here is the information.
Definition of salt: Compounds that produce metal ions and acid ions during ionization are called salts.
Compounds containing crystal water are called crystal hydrates. Crystal hydrate belongs to compounds. Therefore, sulfuric acid is an aqueous sulfate.
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There is no absolute relationship between complex and salt. The complex may be organic. Alum is a double salt. They are usually not connected by coordination bonds (bile alum is a special case)
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Concentrated crystallization and cooled crystallization are related to the physical properties of the object itself.
Concentrated crystallization means that when one object is dissolved in another object to reach saturation, the solvent decreases and crystallization occurs.
Cooling crystallization is easy to understand and is based on the change of solubility with temperature. Generally speaking, the lower the temperature, the easier it is to precipitate crystals, but there are several opposite things.
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Generally speaking, the solubility varies greatly with temperature by cooling crystallization.
Others are more concentrated. .