Nash Equilibrium is defined as a solution concept referring to a best outcome which players won't want to unilaterally deviate given the response of other players doesn't change. To me it seems like Nash equilibrium demands that there is no individual blocking (ie it is indivtually acceptable). So, in sense, it talks about individual level welfare.
While Pareto efficiency is an outcome where one or all cannot be made better off without harming someone. To me, Pareto condition is demanding two things - outcome should not be individually blocked (ie they are better off or at par with their endowments at this pareto outcome) and neither should it be jointly blocked ie it should be acceptable to all. So, in sense it talks about societal welfare.
My problem is Wikipedia page refers to Nash equilibrium as a broader concept. In what sense is Nash equilibrium broader?