Third can refer to:
- an interval (major or minor third)
- the pitch class that is one third away from the tonic
- the third scale degree
In case of the meaning 2., the pitch class that is one third away from the tonic is not always the third scale degree, right? In the pentatonic minor scale the "third" is actually the second scale degree as far as I know and understand it.
Am I right or wrong about this?