Union
$$A \cup B =$$
{ advertise, analyze, aquarius, contextualize, express, identify, learn, leo, localize, scorpio, taurus }
Symmetric Difference
$$A \ominus B =$$
{ advertise, analyze, aquarius, contextualize, express, identify, learn, leo, localize, scorpio, taurus }
Difference
$$B - A =$$
{ advertise, analyze, contextualize, express, identify, learn, localize }
Cartesian Product
$$A \times B =$$
{ (aquarius, advertise),
(aquarius, analyze),
(aquarius, contextualize),
(aquarius, express),
(aquarius, identify),
(aquarius, learn),
(aquarius, localize),
(leo, advertise),
(leo, analyze),
(leo, contextualize),
(leo, express),
(leo, identify),
(leo, learn),
(leo, localize),
(scorpio, advertise),
(scorpio, analyze),
(scorpio, contextualize),
(scorpio, express),
(scorpio, identify),
(scorpio, learn),
(scorpio, localize),
(taurus, advertise),
(taurus, analyze),
(taurus, contextualize),
(taurus, express),
(taurus, identify),
(taurus, learn),
(taurus, localize) }