The word in the title
Naza (נז״א) is a Hebrew military acronym. It stands for nezek agavi (נזק אגבי), which means collateral damage: harm to civilians caused by a strike on a military target.
Nezek (נזק) means damage. Agavi (אגבי) means incidental: something that happens alongside the main thing. Hebrew makes acronyms from the first letters of words, and the army uses them all the time. Nezek agavi becomes נז״א, pronounced “naza”.
The IDF describes it as “a professional term commonly used by every law-abiding military worldwide”. It says the term has been used in the IDF for many years “to describe incidental harm to civilians resulting from a strike on a military objective”.
Estimating that harm before a strike is not optional. In the IDF's words, “assessing expected civilian harm in strikes is a requirement under international law”. The IDF says it makes the assessment “so commanders can determine whether a strike is lawful, direct additional precautions, modify the strike plan or cancel it”.
The film takes the term as its title. The Guardian, which produced the film, explains the word like this: “NAZA is a military acronym euphemistically used by Israeli intelligence to indicate the number of civilians that it expects will be killed in an airstrike.”
The Guardian says the film reveals “the systems behind Israel’s calculated mass killing of Palestinian civilians in Gaza”.
“The film inverts reality in various ways, beginning with its title.”
“Paradoxically, the film presents the exceptional effort and detail the IDF devotes to estimating such harm in strikes as evidence of indifference to civilian lives.”
The film also says the count does not tell adults from children. The IDF answers that this is what the law requires: “a civilian is a civilian regardless of age, and no civilian life is assigned a lesser value”. It adds that “the presence of different categories of civilians, and children in particular, led commanders to cancel, postpone or replan strikes”.
All nine answers are on the claim by claim page.
The word in the film's title is Hebrew. It is not related to the name Naza in other languages.