certainly(with certainty) adverb [UK: ˈsɜːtn.li] [US: ˈsɝː.tən.li]John certainly is clumsy. = John es ciertamente patoso.
indeed(modal: truly; in fact; actually) adverb [UK: ɪn.ˈdiːd] [US: ˌɪn.ˈdiːd]Snoring and excessive smoking are indeed related. = El roncar y el fumar excesivamente ciertamente están relacionados.