If you find the first thing there's a high chance that you'll also find the other thing.
An example sentence: "Cats have three main properties: They're mammals, they give live births, and the internet loves them. Among house pets those first two are common and even [word-goes-here], but the third one is more rare." (Yes, this is a terrible example sentence. I'm sorry for this. The actual sentence is quite technical and has irrelevant (to the current discussion) details. The process of mapping over to this constructed example has lost some character but I hope you understand which meaning I'm going for)
My instinct is to call them "correlated" but that's not quite right. If the second property was never found in the same places that you find the first property that would also be a correlation.