Union
$$A \cup B =$$
{ accomodator, assimilator, converger, diverger, ethos, kairos, logos, pathos }
Symmetric Difference
$$A \ominus B =$$
{ accomodator, assimilator, converger, diverger, ethos, kairos, logos, pathos }
Difference
$$A - B =$$
{ ethos, kairos, logos, pathos }
Difference
$$B - A =$$
{ accomodator, assimilator, converger, diverger }
Cartesian Product
$$A \times B =$$
{ (ethos, accomodator),
(ethos, assimilator),
(ethos, converger),
(ethos, diverger),
(kairos, accomodator),
(kairos, assimilator),
(kairos, converger),
(kairos, diverger),
(logos, accomodator),
(logos, assimilator),
(logos, converger),
(logos, diverger),
(pathos, accomodator),
(pathos, assimilator),
(pathos, converger),
(pathos, diverger) }