I use Anki and the MOST consistent reason a word lands in the leech pile is not because I can't remember what it means, but because I consistently think it means something different than what it means.

So for, instance, I keep thinking French costaud means, "rib or side", probably because I associate it with *costal" from anatomy class or costilla from Spanish.

What I do in this instance is make a Match Pairs card with:

• costaud matching "strong, burly"
  and
• côte matching "rib."

This way I practice differentiating them and simultaneously learn the correct word for rib.

But I do worry that I'm unintentionally strengthening the connection by having them always together like this.

What do you guy do for these situations?

Edit: You may notice that a properly formatted card would include le/la to indicate the gender of the noun, which costaud, as an adjective, would not have but I am inconsistent and also don't like depending on little tricks that only work in index cards, so for the matching card I do not write "la côte" because that way I could guess the card based on part of speech instead of definition.