How many words do we have to know in order to speak in a basic way another language ? I don't remember well where I heard about that or read about that, so I was looking for it online and I found different amount and perspectives. That depends on the level that we want to achieve. For example for a native speaker (English) They might know 15,000 to 20,000 word (quoting "BBC - https://www.bbc.com/news/world-44569277"), So if we want to speak comfortable with a native speaker we have to know those bunch of words?. So I tried writing down how many words I know in my first language but I couldn't do it, because I couldn't remember all word that I have used in whole my life. Some advice that I have found, Says, it is not necessary to learn a large number of words, but it is important for us to learn the most common words, that a native speaker use or that we use in our daily conversation I found in the same article, if we know or learn from 800 to 1000 words (lemmas) which appear frequently in a language, we will be able to understand (70 - 80)%, I think is a good percent for me, but it is not enough if we want to become a fluent speaker. I think so. This topic sounded interesting for me, so I wanted to write it. Sorry for my mistakes. Greetings, Have a wonderful day.