* Sign languages are diverse: Just like spoken languages, sign languages vary greatly from one to another. American Sign Language (ASL) is different from British Sign Language (BSL), which is different from Japanese Sign Language, and so on. Each language has its own unique vocabulary and grammar.
* New signs are created: Sign languages are living languages, and new signs are constantly being invented to represent new concepts, objects, and technologies.
* Regional variations: Even within a single sign language, there can be regional variations and dialects. For example, ASL used in New York might have slightly different signs than ASL used in California.
Therefore, it's impossible to give a precise number of signs for any given sign language.
However, it's generally accepted that sign languages have thousands of signs. For example, ASL is estimated to have thousands of signs, but the exact number is unknown and constantly changing.