That’s all language is.
“Banana” is not a fruit. It’s a word that we use in English to identify a fruit.
And code words work beautifully as long as the person you’re seeking to communicate with understands the word the way you think they do.
Often, when people with goodwill and shared values end up disagreeing, it’s because they didn’t understand the code words that were being used.
In fact, it might be the only reason.