I think Spaced Repetition is precisely a tool, in the context of languages, for the words you don't get enough or constant enough contact through reading, writi

I think Spaced Repetition is precisely a tool, in the context of languages, for the words you don't get enough or constant enough contact through reading, writing, listening and speaking. For words that you do, you don't really need it since you'll memorize it from actual use/need.