それはそうと => By the way N2
Miscellaneous
それでも => Even though A, B N2
Contrast,Surprise
それと => A, and B N3
List, Examples
それとも => A? or B? N3
List, Examples
ばそれまでだ => If A happens, it's over (nothing will be of use) N1
Conditional, While
それなのに => Even though A, (unexpected result) B N2
Contrast,Surprise
こそすれ => B is definitely not so (strongly emphasized) N1
Contrast/Surprise
こそあれ => Although A (A is some negative attribute) N1
Contrast/Surprise
それなら => If A is the case, then (let's) B N2
Reason, Result, Response
[恐「おそ」]れがある => There is a chance of A N2
Potential, Possibility
それが => Although (you'd expect) A, (actually) B, Even though A was planned, B N2
Contrast,Surprise
ずにはいられない/ないではいられない => Can't help but A; A is unavoidable N2
Will, Decision, “Doing”