why say two then (2) in parentheses
A parenthesis is one of the marks usually called (ordinary, or curved) brackets in the UK or material set off by a pair of brackets (or commas or dashes). I've just used four parentheses to enclose two parentheses â but I wouldn't usually mix senses like this as it gets too confusing.t has taken the meaning of the signs  ( or ) . Parentheses is the regular plural. Usually, you use a pair of the signs showing an insertion, then between parentheses - or brackets; however, in parenthesis means: as an afterthought.