This is it. English writes components of a noun compound with spaces in between until it has been around for a very long time. Other languages (German, famously) don’t. But it’s the exact same word-forming process.

There’s no difference between the English “mobile phone” and German “Mobiltelefon” except spelling (and of course, nobody uses either any more). So, if you are an English speaker and you marvel at a language’s (like German’s) ability to just jam words together to make new ones - rejoice! English has that ability too!