にひきかえ => In contrast to A N1
Comparison/ Exchange
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
それはそうと => By the way N2
Miscellaneous
に[沿「そ」]って/に[沿「そ」]い/に[沿「そ」]う/に[沿「そ」]った => Along with A; In line with A N2
Based, Focused, Depending on
そうにない => N2
Potential, Possibility
そうだ => Seem, like… N4
Situations and Experiences
てこそ => Now since A... N2
Reason, Result, Response
ばこそ => Because of A N1
Reason, Result, Response
それと => A, and B N3
List, Examples
それとも => A? or B? N3
List, Examples
こそ~が => Although A is B N1
Contrast/Surprise
そのため => Because of A, B N3
Reason, Result, Response