No, what they're describing is a False Friend. A very specific type of homophone/graph/nym. They work across languages. And in many cases (though not a hard rule) have close enough meaning/usage that would confuse non-native speakers trying to comprehend things via context.
E.g. A German telling his English friend, "I'll meet you at the gymnasium". The sentence is correct, and makes perfect sense to both. But they'll end up at two different places.
Am I being wooshed here? Aren't Go and Go Fish two completely different games?