* What counts as a word? Do we include technical terms, slang, regional variations, proper nouns, etc.? Different dictionaries and sources have different criteria.
* Languages are constantly evolving. New words are created all the time, and old ones fall into disuse.
* Some languages have very complex morphology. Languages like Finnish or Inuktitut can create a huge number of words by adding prefixes, suffixes, and other elements to root words.
That said, some sources estimate that:
* Chinese has a vast number of words due to its system of combining characters to create new meanings.
* English also has a very large vocabulary, especially when considering technical terms and scientific vocabulary.
Ultimately, the question of which language has the most words is more about the complexity and richness of a language rather than a simple numerical comparison.