Verbiage is what it sounds like — a lot of words: verbs, nouns, adjectives and all the other parts of speech. Usually, verbiage means a few too many words — like the excessive verbiage in a legal document.
Verbiage comes from the 18th-century French verbier, meaning "to chatter." Verbiage can mean just the words being used to communicate, or a bunch of empty words used to obscure communication. Someone long-winded might receive a sarcastic "compliment" about his verbiage, while another speaker might receive genuine applause for intelligent verbiage, or choice of words.