Have a look at this section in the documentation:
it explains the 9 element intersection matrix.
The defintions on the spatial relationships (bit mask, generated in row-major form like "101001111") are stored in the table MDSYS.MD$RELATE
select * from MDSYS.MD$RELATE where SDO_relation = 'COVEREDBY' will give you those sdo_masks for COVEREDBY.
not sure what you mean.
all relationships are in that table, with the possible combinations of the mask. (9 ELEMENT INTERSECTION MATRIX).
you can always create your own table storing the textual definition if this is what you need.
That is what I mean exactly. I was hoping Oracle documented the terms somewhere in the database so I wouldn't have to. That way if more or added or meanings changed, it would be updated "automatically".