is a specific kind of: articulator.

is a broader term that covers: alliterator | caller, caller-up, phoner, telephoner | babbler, chatterbox, chatterer, magpie, prater, spouter | conversationalist, conversationist, schmoozer | dictator | drawler | driveller, jabberer | ejaculator | growler | asker, enquirer, inquirer, querier, questioner | lecturer | lisper | mentioner | motormouth | mumbler, murmurer, mutterer | narrator, storyteller, teller | orator, public speaker, rhetorician, speechifier, speechmaker | prattler | ranter, raver | reciter | native speaker | stammerer, stutterer | stentor | talking head | venter | vociferator | voicer | wailer | whisperer | informant, witness, witnesser ... show more.

derivation: lecture, talk | mouth, speak, talk, utter, verbalise, verbalize | speak, talk.