Hi,
1. arguement(n),argue(v),argumentative(adj)
2.change(n,v),changable/changed(adj)
3.relation(n),relate(v),related(adj)
4.employ(v,n),employment,employer,employee(n),employed/employable(adj)
5.anxiety(n),anxious/anxiously(adj),NO VERB
6.conclusion(n),conclude(v),concluding/conclusive/conclusively(adj)
7.suggestion(n),suggestible/sugg