Similarly, "gairaigo", while making Japanese easier to learn for foreign students in some cases, can also cause problems due to independent semantic progression. For example, English "stove", from which "sutōbu" () is derived, has multiple meanings. Americans often use the word to mean a cooking appliance, and are thus surprised when Japanese take it to mean a space heater (such as a wood-burning stove). The Japanese term for a cooking stove is another "gairaigo" term, "renji" (), from the English "range"; a gas stove is a "gasurenji" ().