Union
$$A \cup B =$$
{ analysis, collection, dissemination, feedback, fetishism, monotheism, polytheism, processing, requirements }
Symmetric Difference
$$A \ominus B =$$
{ analysis, collection, dissemination, feedback, fetishism, monotheism, polytheism, processing, requirements }
Difference
$$A - B =$$
{ analysis, collection, dissemination, feedback, processing, requirements }
Cartesian Product
$$A \times B =$$
{ (analysis, fetishism),
(analysis, monotheism),
(analysis, polytheism),
(collection, fetishism),
(collection, monotheism),
(collection, polytheism),
(dissemination, fetishism),
(dissemination, monotheism),
(dissemination, polytheism),
(feedback, fetishism),
(feedback, monotheism),
(feedback, polytheism),
(processing, fetishism),
(processing, monotheism),
(processing, polytheism),
(requirements, fetishism),
(requirements, monotheism),
(requirements, polytheism) }