It's sort of like if someone explains Japanese is a language, you know, like Spanish or Portuguese. Don't use two other mutual-intelligible languages, which happen to be totally different than the one you're talking about, as your examples.
To be fair, there really aren't *any* languages similar to Japanese. The closest is probably Chinese (Mandarin), but that's only because Japanese borrows a bunch of written characters from it, for one of the three character sets, called Kanji. (So Japanese people can make out a few written words in Chinese, and vice versa, much like English speakers can make out a few words in French which we've borrowed.) The pronunciation, grammar rules, syntax, etc. are all completely different. Japanese isn't even a tonal language like Chinese.
The only languages similar to Japanese are other "Japonic" languages, which are all used only in Japan, and within Japan are merely considered dialects of Japanese, and almost no one outside of Japan would have heard of these languages anyway as they're endangered, much like other languages spoken only by a small number of people, such as Romansh used in a small part of Switzerland by about 60k people, or the Frisian languages used by about 500k people in Netherlands and Germany.
So if you wanted to say "Japanese is a language, you know like...", you'd do best just listing 2 or 3 completely unrelated languages, such as Portuguese, Russian, and Hindi, because there simply aren't any well-known languages that are similar to Japanese.