zero refers to the absence of a quantity or a value of nothing.

zero can refer to a starting point in a scale or measurement.

शून्य

English Usage: The temperature dropped to zero degrees Celsius last night.

Hindi Usage: कल रात तापमान शून्य डिग्री सेल्सियस तक गिर गया।

to zero means to adjust a measuring instrument to specify a zero point.

to zero out can mean to eliminate or to make something equal to zero.

शून्य करना

English Usage: After the audit, they decided to zero out the discrepancies.

Hindi Usage: लेखापरीक्षा के बाद, उन्होंने असमानताओं को शून्य करने का निर्णय लिया।