editing disabled

Degree number
Function
Regular tetrad
I
Tonic
I-III-V-VII
II
Supertonic
II-IV-VI-VIII
III
Comediant
III-V-VII-IX
IV
Subdominant
IV-VI-VIII-I
V
Submediant
V-VII-IX-II
VI
Mediant
VI-VIII-I-III
VII
Dominant
VII-IX-II-IV
VIII
Cosubmediant
VIII-I-III-V
IX
Leading tone
Subtonic
IX-II-IV-VI

For terms like enneatonic see
Anhemitonic scale #Miscellanea - Wikipedia