Artist is just a part of a troupe.

In all pairs except (d), first is used to contain the second.

In all pairs except (a), first is the ore from which metal can be obtained and second in the name of that metal which can be obtained . On the other hand , Solder is an alloy.

In all pairs expert (C), first is known as the collection of secondA

In all pairs expert (a) , both the word belong to thr same class.

In all pairs expert (b) , second is the sound made by first.

In all pairs expert (a) ,first is a type of second.

All expert ( b) are antonym pairs

In all pairs except (d), first is the founder of second.

In all other except (b), second is the organ used by first for its movement.