[{"Bold_text": "adjective", "List Items": ["free from doubt or reservation; confident; sure:I am certain he will come.Synonyms: satisfied", "destined; sure to happen (usually followed by an infinitive):He is certain to be there.", "inevitable; bound to come:They realized then that war was certain.", "established as true or sure; unquestionable; indisputable:It is certain that he tried.Synonyms: clear , plain , obvious , incontrovertible , irrefutable , incontestable , indubitable", "fixed; agreed upon; settled:on a certain day; for a certain amount.Synonyms: determined", "definite or particular, but not named or specified:A certain person phoned. He had a certain charm.", "that may be depended on; trustworthy; unfailing; reliable:His aim was certain.", "some though not much:a certain reluctance.", "Obsolete. steadfast ."]}, {"Bold_text": "pronoun", "List Items": ["certain ones:Certain of the members declined the invitation."]}]