Union
$$A \cup B =$$
{ earth, finding body, finding feeling, finding life span, finding status, fire, metal, water, wood }
Symmetric Difference
$$A \ominus B =$$
{ earth, finding body, finding feeling, finding life span, finding status, fire, metal, water, wood }
Difference
$$A - B =$$
{ finding body, finding feeling, finding life span, finding status }
Difference
$$B - A =$$
{ earth, fire, metal, water, wood }
Cartesian Product
$$A \times B =$$
{ (finding body, earth),
(finding body, fire),
(finding body, metal),
(finding body, water),
(finding body, wood),
(finding feeling, earth),
(finding feeling, fire),
(finding feeling, metal),
(finding feeling, water),
(finding feeling, wood),
(finding life span, earth),
(finding life span, fire),
(finding life span, metal),
(finding life span, water),
(finding life span, wood),
(finding status, earth),
(finding status, fire),
(finding status, metal),
(finding status, water),
(finding status, wood) }