Final answer:
Social media and internet web pages refer to online platforms and individual pages on the internet, while mailers and news are communication materials and current events information, respectively.
Step-by-step explanation:
Social media refers to online platforms such as Fa`cebook, T`witter, and Yo`uTube that allow users to interact with each other, share information, and engage in discussions. Internet web pages are individual pages on the internet that contain information and can be accessed through search engines or by entering the website's URL.
Mailers are physical or electronic communication materials that are sent to a group of people to convey a message or promote a product or service. News refers to current events or information about the world that is reported through various media outlets such as newspapers, online news websites, and TV broadcasts.