Update Opposition.md

🔰 Grammar/Opposition.md

@@ -16,6 +16,8 @@ This is the basic way to say "but".
 > コンビニに行きました。==でも==、何も買わなかった。
 > I went to the convenience store. But I didn't buy anything.
 
+⚠ Do not confuse with [[TeF (4) - even if#Even if ても・でも]].
+
 ## しかし
 
 This is similar to でも, meaning "however", but usually more formal and most commonly found in written form.