As I understand it, the language is not what is important. I see things all over recommending chanting this or that string of syllables, to evoke whatever supposed outcome, but it's meaningless to me as I have no idea what any of that means.
However, learning a language, or phrases in a different language, for the sake of magic may be effective, for some people. But they know the meanings.
What matters most is focus and intent. If you use a word with several meanings, as long as your intent is using one specific meaning of that word, or purpose of a color, etc., that is what matters.