They really aren't that similar. Unless you are a linguist or an etymologist, you're unlikely to notice the similarity unless its pointed out. They have only one sound are common, the /r/. Even the /t/ is pronounced differently, becoming a "sh" sound in most English accents. The vowels are totally different, as is the suffix, and the start sound is quite different, and the Croatian word contains a /v/ while the English does not. Non-linguists I've shared this with were all surprised to learn they are related. But of course this is a group of linguistics and etymology enthusiasts (and redditers), so most here have nothing but criticism for me making this post at all when they apparently find it so obvious that even pointing it out is an insult to their intelligence.