First is the sound produced by the second.

Second denotes the class of machines to which the first belong.

Second evaluates and comments on the first.

First is the place where second is imparted.

Library, where catalogue is the list books present in library.

First depends on the second for results.

One runs a race similarly Studies a book.

First contains the collection of second.

Second divides the first into two part equal area.

First denotes the part of the body where the second is worn.