different between validity vs lawfulness

English

valid +? -ity, borrowed from Middle French validité, from Late Latin validitas.

validity (countable and uncountable, plural validities)

The state of being valid, authentic or genuine.
State of having legal force.
A quality of a measurement indicating the degree to which the measure reflects the underlying construct, that is, whether it measures what it purports to measure (see reliability).

From Middle English laufulnes, lahfulnesse, equivalent to lawful +? -ness.

lawfulness (countable and uncountable, plural lawfulnesses)

Property of being lawful, of obeying the law.
His extreme lawfulness made him righteous, but did it make him merciful?
Property of operating in a manner organized by certain laws.

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