This is the 2032nd most frequent Japanese word.
ポテトチップス
Potato chips.
ポテトチップス is used as a direct object, indicating the item that the action of buying is directed towards.
ポテトチップスを買うためにスーパーへ行った。
I went to the supermarket to buy potato chips.
ポテトチップス is used as the subject of the sentence, describing what is enjoyed when paired with another activity.
ポテトチップスは映画を見ながら食べるのが好きです。
I like eating potato chips while watching movies.
ポテトチップス is used in a possessive form, specifying the item associated with the bag in question.