This is the 553rd most frequent Arabic word.
كامل
Complete; perfect; whole.
Here, 'كامل' means 'complete' or 'whole', used as an adjective to describe the state of the book.
هذا الكتاب كامل.
This book is complete.
In this context, 'كامل' refers to 'whole' or 'entire', describing the inclusion of all members of the team.
ذهب الفريق الكامل إلى المباراة.
The whole team went to the match.
Here, 'كاملًا' emphasizes the entirety of the week, used as an adverbial form to specify the duration of time.