1791, "state or condition of being public or open to the observation and inquiry of a community," from French publicité (1690s), from Medieval Latin publicitatem (nominative publicitas), from Latin publicus (see public (adj.)). Sense of "a making (something) known, an exposure to the public" is from 1826, shading by c. 1900 into "advertising, the business of promotion." Publicity stunt is recorded by 1908.
late 14c., "divination from the flight of birds," from Old French augure, augurie "divination, soothsaying, sorcery, enchantment," or directly from Latin augurium "divination, the observation and interpretation of omens" (see augur (n.)). Sense of "omen, portent, indication, that which forebodes" is from 1610s. Often in plural, auguries.
early 15c., "accusation," from Late Latin detectionem (nominative detectio) "an uncovering, a revealing," noun of action from past-participle stem of detegere "uncover, expose," figuratively "discover, reveal, disclose," from de "un-, off" (see de-) + tegere "to cover," from PIE root *(s)teg- "to cover." From 1610s as "discovery, finding by search or observation," especially "act of finding out and bringing to light."
early 14c., concelen, "to keep close or secret, forbear to divulge," from Old French conceler "to hide, conceal, dissimulate," from Latin concelare "to hide," from con-, here perhaps an intensive prefix (see con-), + celare "to hide" (from PIE root *kel- (1) "to cover, conceal, save"). From early 15c. as "to hide or shield from observation." Replaced Old English deagan. Related: Concealed; concealing; concealable.
1590s, "a private or personal matter, a secret;" c. 1600 as "seclusion, state of being in retirement from company or the knowledge and observation of others," from private (adj.) + abstract noun suffix -cy. Meaning "state of freedom from intrusion or interference" is from 1814. Earlier was privatie (late 14c. as "secret, mystery;" c. 1400 as "a secret, secret deed; solitude, privacy"), from Old French privauté.