Replacements use the word “instead” to define one thing that replaces another. For example, a card might say “If this card is put into your discard pile from play, remove it from the game instead.” In that case, the card would never go to the discard pile; going to the discard pile is completely replaced with removing it from the game. Some replacements also say “the next” in their rules text to define something that could be replaced in the future. These are referred to as delayed replacements.