variational

As adjectives the difference between variational and null

is that variational is of, pertaining to, or caused by variation while null is having no validity, "null and void.

As a noun null is

a non-existent or empty value or set of values.

As a verb null is

to nullify; to annul.

As a noun variable

is variable.

As an adjective variational is

of, pertaining to, or caused by variation.

As adjectives the difference between variational and nonvariational

is that variational is of, pertaining to, or caused by variation while nonvariational is not variational.

As an adjective variational

is of, pertaining to, or caused by variation.

As an adverb variationally is

in a variational manner.