extension - n. a small software program that can be added on to a browser

browser -  n. a computer program that is used to find and look at information on the Internet

spell checker -  n.  a computer program that finds and corrects misspelled words in documents, e-mail, etc.

cyberbully - v. the use of electronic communication to bully a person, typically by sending messages of an intimidating or threatening nature.

prompt - v. to cause (someone) to do something
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