Union
$$A \cup B =$$
{ angry, belly, bored, ears, eyes, feet, hands, happy, head, mouth, peaceful, thighs }
Symmetric Difference
$$A \ominus B =$$
{ angry, belly, bored, ears, eyes, feet, hands, happy, head, mouth, peaceful, thighs }
Cartesian Product
$$A \times B =$$
{ (belly, angry),
(belly, bored),
(belly, happy),
(belly, peaceful),
(ears, angry),
(ears, bored),
(ears, happy),
(ears, peaceful),
(eyes, angry),
(eyes, bored),
(eyes, happy),
(eyes, peaceful),
(feet, angry),
(feet, bored),
(feet, happy),
(feet, peaceful),
(hands, angry),
(hands, bored),
(hands, happy),
(hands, peaceful),
(head, angry),
(head, bored),
(head, happy),
(head, peaceful),
(mouth, angry),
(mouth, bored),
(mouth, happy),
(mouth, peaceful),
(thighs, angry),
(thighs, bored),
(thighs, happy),
(thighs, peaceful) }
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