What is the difference between the terms 'inadequate' and 'insufficient' as standardized in the NANDA-I terminology?

In NANDA-I terminology, 'inadequate' is standardized to mean a lack of quality and/or lack of quantity, while 'insufficient' is used solely to indicate a lack of quantity. This distinction was adopted in the 2021–2023 edition to improve clarity and translation consistency.

The 2021–2023 NANDA-I edition clarifies that the English word 'inadequate' had been ambiguous because it could refer to either a quality deficit or a quantity deficit. To resolve this, the terminology now uses 'inadequate' consistently to point to a lack of quality and/or lack of quantity, whereas 'insufficient' is reserved strictly for a lack of quantity. This standardization means that phrases such as 'insufficient access to resources' have been revised to 'inadequate access to resources' when the intended meaning involves quality as well as quantity.