grammar puzzle

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Across
  1. 3. A supplementary player for noun
  2. 5. Is a word that has the same or nearly the same meaning as another word in some contexts.
Down
  1. 1. a word that means the opposite of another word.
  2. 2. A word used to describe an action, state, or occurrence, and forming the main part of the predicate of a sentence
  3. 4. A word used to identify any of a class of people, places, or things , or to name a particular one of these.