Difference between Null and Zilch

Null

Part of speech: adjective

Definition: Having no legal validity, "null and void" insignificant absent or non-existent of the null set of or comprising a value of precisely zero causing a complete loss of gene function, amorphic.

Part of speech: verb

Definition: to nullify

Part of speech: noun

Definition: A non-existent or empty value or set of values. Zero; nothing. the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator. the attribute of an entity that has no valid value.

Zilch

Part of speech: noun

Definition: nothing; zero

Part of speech: adjective

Definition: nothing; zero