Select the word pair in which the words are related in the same way as the words are related in the following pair. Nib : Pen

Tyre : Round Car : Seat Room : House Triangle : Three

Room : House

Logic here is : Nib : Pen Nib is part of Pen . Similarly , By observing all options only option 4 follow the pattern . Room : House Room is part of House . Room : House  is correct answer .