Around should refer to a physical proximity or surrounding.
Aroma vs Odor
Aroma refers to a pleasing smell (cake’s aroma), and odor (a kitchen’s foul odor) refers to an unpleasant smell.
Automatic vs Spontaneous
Automatic, spontaneous are not close synonyms but they agree in meaning brought into being or action by an internal as opposed to an external agency.
At a run vs On the run
at a run—moving at a running pace:
At a push vs At one push
at a push —(coll.) if compelled by need or circumstances:
Armory vs Arsenal
An armory is a storehouse for weapons, and an arsenal is a supply of weapons.
Authorize vs Commission vs Accredit vs License
Authorize, commission, accredit, license denote in common to invest with power or the right to act.
Authentic vs Genuine vs Veritable vs Bona fide
Authentic, genuine, veritable, bona fide denote being exactly what the thing in question is said to be or professes to be.
Argument vs Quarrel
An argument refers to a discussion or debate usually not involving anger.
At a price vs At the price
at a price—1. bought or sold at a high cost; very expensive:
Aural vs Auricular vs Audible
Aural, auricular, audible mean heard or perceived by the ear but they are not often interchangeable.
Area vs Aria
Area refers to a region or section.