This is the 145th most frequent Ukrainian word.
тут
Here.
In this sentence, "тут" signifies a certain location, indicating that the book is present at a specified place.
Тут моя книга.
Here is my book.
Here, "тут" denotes the speaker's place of residence, specifying the location of their living arrangement.
Я живу тут вже три роки.
I have been living here for three years already.
In this case, "тут" refers to a specific situation or place requiring careful behavior.