[極「きわ」]み/[極「きわ」]まりない => Extremely A N1
Degree/ Level/Amount
[間「あいだ」]/[間「あいだ」]に => During A, During A (before A is finished/over) N2
Time, Situation
[極「きわ」]まる => Extremely A, could not be more A N1
Adjectival, Descriptions