The 10 words below are commonly mispronounced in English. The first five are the top results from Google's autofill for the phrase "How do I pronounce…" The rest are words that people often don't realize they're messing up, so they're unlikely to look them up on the web.
10 English Words You're (Probably) Pronouncing Wrong! | Difficult Pronunciation | Common Mistakes
I'm not a prescriptivist: words are your thing, so pronounce them however you like. "Correct" pronunciations are just what we call the way words are usually pronounced according to the general consensus of English speakers. But there's no governing body: if enough people pronounce a word "wrong," it's no longer wrong, so keep saying "fried skrimp" or "Anartica," as I do.
I’ll start with a tough one. “Gyro” is either a shortened form of “gyroscope” or the name of a Greek lamb sandwich.
In the unlikely event that you are talking about gyroscopes and need to abbreviate the word, it is pronounced "yeye-roh." According to Webster's, the Greek sandwich is called a "yee-roh" or a "zhir-roh." It rhymes with "hero."