This is the 6740th most frequent Japanese word.
パーティ
"パーティ" (pāti) means "party" or "social gathering" in English.
パーティ is used to describe a social event involving celebration or gathering.
私たちは来週の土曜日にパーティを開きます。
We will host a party next Saturday.
パーティ is used here as the subject of the sentence to describe the event itself.
そのパーティはとても楽しかったです。
The party was very enjoyable.
パーティ is used to indicate the event to which someone was invited.