A language usually refers to a programming or markup language. These languages have grammar including syntax just like other languages. In fact, those who study foreign language tend to pick up new programming languages easier as well, and vice versa.
[Languages learned at SkilStak]
💬 My first-love is actually foreign languages having learned French and Caribbean Creole while on a Mormon mission to the French West Indies (back when I was Mormon). I later majored in Russian and lived and worked in Russia for several years before switching careers to work for a start-up Internet service provider, Fibernet. When you think of it, math is a language in a way as well. In fact, math is the only truly universal language, as Ellie would say.
How v.s. What Languages
There are lots of types of languages in the world but when it comes to technology and making apps these languages can be generally categorized into two groups:
those that give specific instructions about how to do something, and
those that declare exact what something is by structuring the data that describes something.