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expensive – adj. costing a lot of money
phrase – n. a group of two or more words that express a single idea but do not usually form a complete sentence
coordination tag – n. grammar words that show that the speaker has not exactly identified the noun they are thinking of
conversation – n. an informal talk involving two people or a small group of people
imprecise – adj. not clear or exact
optional – adj. available as a choice but not required
quite – adv. exactly or precisely
uncertainty – n. something that is doubtful or unknown
construction – n. the way words in a sentence or phrase are arranged
formal – adj. suitable for serious or official speech and writing
