Answer: C) Synonyms and antonyms.
Explanation for this question is being written.
Answer: A) True
Answer: C) Synonyms
Answer: B) Clean
Answer: D) Synonyms
Answer: B) Thesaurus
Answer: D) Thesaurus
Answer: B) Definition by synonymy.
Answer: C) Paraphrase
Answer: C) Thesaurus
Answer: A) Thesaurus