1) Not restrictive or limiting 2) Unrestrictive 1) Unrestrictive 
[adj] - (grammar) not limiting the reference of a modified word or phrase
adjective not limiting the reference of a modified word or phrase; `the nonrestrictive clause in `I always buy his books, which have influenced me greatly,` refers to his books generally and adds an additional fact about them`
not restrictive or limiting. · descriptive of a modified element rather than limiting of the element's meaning:Cf.(def. 4). a nonrestrictive modifier.