When you are very small you hear the words “dog”, “cat”, “house”, “car”, “mom”, “dad” and just assume that it has always been like that.
As you get older you encounter new words like “selfie”, “defriend”, “doxx”, “bae”, “bling” and you might initially recoil. “What the hell is going on?! Back in my day we had proper words like cat and dog, not this ‘selfie’ nonsense”. I hate to break it to you, but words are coming into the language all the time and they always have.
Even words are seemingly commonplace as “lifestyle” only started being used in the modern sense in the 60s.
Other words have been around longer though, much longer. The word “house” dates back to the language of the Germanic tribes. Linguists call this language Proto Germanic. It was spoken during the bronze age a few millenia ago. The word probably goes back even further.
But where did the word originally come from? Where did any word actually come from? Surely at some point there was no need for the word “house” so the word didn’t exist back then. As our ancestors moved out of caves and moved into the savannah or forest they would eventually have needed a word to describe the thing that provided them shelter.