The International Organization for Standardization (ISO) provides the following definitions for…
Biometric Recognition /
Automated recognition of individuals based on their biological and behavioural characteristics.
Biometric Characteristic /
Biological and behavioural characteristic of an individual from which distinguishing, repeatable biometric features can be extracted for the purpose of biometric recognition.
The ISO standard defining common biometrics terms can be found here.
You may also be interested in our Verification (1:1) and identification (1:n) explanatory graphics, available here.