Diagnostic and Essential

Diagnostic adjective - Serving to identify as belonging to an individual or group.

Essential and diagnostic are semantically related. In some cases you can use "Essential" instead an adjective "Diagnostic".

Nearby Words: diagnosis, diagnose, diagnostics, diagnosed, diagnostician

Essential adjective - Impossible to do without.

Diagnostic and essential are semantically related. Sometimes you can use "Diagnostic" instead an adjective "Essential".

Nearby Words: essence, essentially, essentiality