This is the 2953rd most frequent Japanese word.
サマー
"サマー" means "summer."
Here, 'サマー' is used as part of a compound noun 'サマーキャンプ', representing 'summer camp' in English, indicating a seasonal activity during summer.
サマーキャンプの準備が進んでいます。
The preparations for the summer camp are underway.
In this case, 'サマー' is used in the phrase 'サマースタイル', meaning 'summer style', describing a fashion or design suitable for summer.
このサマースタイルの服は涼しくて快適です。
This summer-style clothing is cool and comfortable.
Here, 'サマー' is used in the term 'サマーセール', referring to 'summer sale', a seasonal promotional campaign.