Union
$$A \cup B =$$
{ agape, being, eros, essence, ludus, mania, notion, pragma, storge }
Symmetric Difference
$$A \ominus B =$$
{ agape, being, eros, essence, ludus, mania, notion, pragma, storge }
Difference
$$A - B =$$
{ agape, eros, ludus, mania, pragma, storge }
Cartesian Product
$$A \times B =$$
{ (agape, being),
(agape, essence),
(agape, notion),
(eros, being),
(eros, essence),
(eros, notion),
(ludus, being),
(ludus, essence),
(ludus, notion),
(mania, being),
(mania, essence),
(mania, notion),
(pragma, being),
(pragma, essence),
(pragma, notion),
(storge, being),
(storge, essence),
(storge, notion) }