* Defining a language is complex: There is no agreed-upon definition of what constitutes a separate language versus a dialect.
* Language evolution is ongoing: Languages constantly change and evolve, with new ones emerging and others becoming extinct.
* Data collection is challenging: It's difficult to gather accurate and comprehensive data on language usage around the world.
Estimates range widely:
* UNESCO: Estimates around 7,100 languages.
* Ethnologue: Lists over 7,100 languages, with some researchers arguing that there are likely many more undocumented or endangered languages.
It's safe to say that there are thousands of languages spoken in the world, but the exact number is unknown and constantly changing.