This is the 5th most frequent Hebrew word.
זה
"This" or "it" (masculine).
'זה' is used here as a demonstrative pronoun to refer to a book.
זה ספר מעניין.
This is an interesting book.
'זה' functions as a pronoun referring to something unspecified.
ראיתי את זה ברחוב.
I saw this on the street.
'זה' is utilized as part of a phrase indicating a specific tool used for cooking.