[{"Bold_text": "noun", "List Items": ["a volatile liquid, as turpentine, used to dilute paint, varnish, rubber cement, etc., to the desired or proper consistency.", "a person who adds thinners to paints, varnishes, etc.", "a person who specializes in weeding plants, pruning shrubbery, thinning , etc."]}, {"Bold_text": "adjective", "List Items": ["comparative of thin ."]}]