Zoning is a tool that most cities use to govern âusesâ (e.g. residential, commercial, or industrial), the size of buildings, and how buildings relate to their surroundings, including other buildings, open spaces, and the street.n the U.S., zoning began as a tool to separate uses from one another, and in particular was used to separate more impactful uses (manufacturing) from more sensitive uses (residential). This type of zoning is largely known as Euclidean Zoning, named after the U.S. Supreme Court Case that legitimized the use of the tool.
covert operation. n an intelligence operation so planned as to permit plausible denial by the sponsor. Types: black operation.
Covert means secret or hidden. Soldiers might take part in a covert mission to infiltrate an enemy camp â and you might take part in a covert mission to steal your brother's leftover Halloween candy. Covert is the opposite of overt, which means obvious, or in full view. Covert things are hidden, private, or stealthy. It comes from the Old French covert, or covered. A covert bag of chips you've snuck into the movie theater might literally be covered, hidden under your coat, while a covert plan to throw your dad a surprise party is just a secret.