The verb manage is used several different ways. One can manage stress, manage to get by, or manage a business. The last example, in which manage means broadly "to be in charge of," is the closest to preside. To preside is to exercise management or control, the way a lawyer might over an estate or a president over a country during a specific event or time period. The verb's similarity to the word president is no coincidence: the two terms come from the same Latin verb (praesidēre "to preside over," literally, "to sit in front of"). Preside is also used to talk about occupying a place of authority, as in an assembly or meeting: when you preside over a meeting, you are acting as the person in charge.
Love is in the air when it comes to today’s lexical couple. Or more precisely, love is right there in their definitions! The first term, enamored, means simply “in love.” It is the past participle of the passionate verb enamor, “to fill or inflame with love.” Smitten means “very much in love.” It comes from the verb smite, “to afflict or affect” and also “to strike or hit.” It makes sense, then, to think of being smitten as being "struck" by love or—you guessed it!—lovestruck. As for the undertones of meaning: where enamored emphasizes admiration and appreciation, smitten skews more toward infatuation.
The adjective friendly gets a lot of use in English; it can describe individuals or groups that are helpful or welcoming (a friendly staff), or surroundings that are pleasant or conducive to a certain task (a friendly environment). Affable is more specific. This delightful descriptor is usually used of individuals who are easy to approach and talk to. A person with an affable demeanor puts others at ease or draws them in with their warmly polite and agreeable manner.