Union
$$A \cup B =$$
{ application, audio, define, deliver, develop, discover, example, font, image, message, model, multipart, text, video }
Symmetric Difference
$$A \ominus B =$$
{ application, audio, define, deliver, develop, discover, example, font, image, message, model, multipart, text, video }
Cartesian Product
$$A \times B =$$
{ (application, define),
(application, deliver),
(application, develop),
(application, discover),
(audio, define),
(audio, deliver),
(audio, develop),
(audio, discover),
(example, define),
(example, deliver),
(example, develop),
(example, discover),
(font, define),
(font, deliver),
(font, develop),
(font, discover),
(image, define),
(image, deliver),
(image, develop),
(image, discover),
(message, define),
(message, deliver),
(message, develop),
(message, discover),
(model, define),
(model, deliver),
(model, develop),
(model, discover),
(multipart, define),
(multipart, deliver),
(multipart, develop),
(multipart, discover),
(text, define),
(text, deliver),
(text, develop),
(text, discover),
(video, define),
(video, deliver),
(video, develop),
(video, discover) }