Bombay cats and black cats are actually two different cat concepts. Let's look at their differences:

While Bombay cats and black cats may share some physical similarities, they differ significantly in breed, characteristics, and history. The following is a detailed description:
Mumbai cat
Variety Introduction
The Bombay cat is a carefully bred purebred cat with the goal of creating a domestic cat with the appearance of a black panther.
Origin and History
Origin : The breeding of the Bombay cat began in the 1950s by American breeder Nikki Horner in Kentucky.
Breeding Goal : Horner's goal was to create a domestic cat that resembled a black panther, so she chose to mate a black American Shorthair with a Burmese cat, which eventually resulted in the Bombay cat.
Breed certification : The Bombay cat was recognized as a purebred cat by the International Cat Association (TICA) in 1976 and has gradually gained recognition in other cat associations.
Appearance features
Coat : Bombay cats have very short, smooth fur with a glossy black sheen.
Eyes : Bombay cats typically have striking gold or copper eyes.
Size : Bombay cats are medium-sized, muscular, and have smooth body lines, giving them an overall appearance resembling a black panther.
personality and behavior
Temperament : Bombay cats are gentle, friendly, and love being around people. They are typically intelligent, quick learners, and very well-suited for family life.
Behavior : Bombay cats are lively and active, and love to play, but they can also quietly keep their owners company.
Black Cat
Variety Introduction
A black cat is not a specific breed of cat, but refers to any cat with black fur. Black cats can belong to several different cat breeds.
Origin and History
Widely found : Black cats are found in many different cat breeds, such as American Shorthair, British Shorthair, and Siamese.
Cultural Symbolism : Black cats have different symbolic meanings in different cultures. In some cultures, black cats are considered a symbol of bad luck, while in others they are seen as a symbol of good luck.
Appearance features
Coat : Black cats have black fur, but the texture and length can vary depending on the breed. Some black cats have short, smooth fur, while others have longer fur.
Eyes : Black cats have a variety of eye colors, including yellow, green, blue, or other colors, depending on their breed.
Size : The size of a black cat varies depending on its specific breed; it can be a small, medium, or large cat.
personality and behavior
Temperament : The temperament of black cats varies depending on breed and individual differences. Some black cats may be very friendly and outgoing, while others may be more independent and introverted.
Behavior : The behavioral characteristics of black cats also vary depending on the breed and individual. Some may be lively and active, while others may prefer a quiet environment.
Summarize
Bombay cats are a specially bred purebred cat breed known for their short, jet-black fur, golden or bronze eyes, and panther-like appearance. They are friendly and suitable for family life.
Black cat : refers to any cat with black fur. It can belong to several different breeds, and its appearance, temperament and behavior vary from breed to breed.
While Bombay cats and black cats may look similar, they differ significantly in breed background, physical characteristics, and temperament. Bombay cats are a specific purebred, while black cats can be any of several different breeds.