[極「きわ」]み/[極「きわ」]まりない => Extremely A N1
Degree/ Level/Amount
中 => Throughout, all over, during the course of N5
Time
[極「きわ」]まる => Extremely A, could not be more A N1
Adjectival, Descriptions
[一方「いっぽう」]だ => Change A continues, A does not stop N2
Miscellaneous
[最中「さいちゅう」] => In the middle of A N3
Time, Situation
[中心「ちゅうしん」]に => With A as the center N2
Miscellaneous
[一方「いっぽう」] => On one hand A, on the other, B; Although A, at the same time, B N2
Contrast,Surprise