informal – adj. relaxed in tone : not suited for serious or official speech and writing

phrase – n. a group of two or more words that express a single idea but do not usually form a complete sentence

essay – n. a short piece of writing that tells a person's thoughts or opinions about a subject

dictionary – n. a reference book that contains words listed in alphabetical order and that gives information about the words' meanings, forms, pronunciations, etc.

original – adj. happening or existing first or at the beginning

emphasize – v. to give special attention to (something)

punctuation – n. the marks (such as periods and commas) in a piece of writing that make its meaning clear and that separate it into sentences, clauses, etc.

frustrated – adj. very angry, discouraged, or upset because of being unable to do or complete something