Union
$$A \cup B =$$
{ act, anagogical, check, do, literal, moral, plan, typological }
Symmetric Difference
$$A \ominus B =$$
{ act, anagogical, check, do, literal, moral, plan, typological }
Difference
$$A - B =$$
{ anagogical, literal, moral, typological }
Cartesian Product
$$A \times B =$$
{ (anagogical, act),
(anagogical, check),
(anagogical, do),
(anagogical, plan),
(literal, act),
(literal, check),
(literal, do),
(literal, plan),
(moral, act),
(moral, check),
(moral, do),
(moral, plan),
(typological, act),
(typological, check),
(typological, do),
(typological, plan) }