generation gap

The difference in customs, attitudes, and beliefs between adults and youths, typically teenagers.


jukebox

A coin-operated music player that allowed the user to select songs to be played aloud from a variety of programmed music.


Source
http://1.bp.blogspot.com/-sSufFHndMP0/TiDGzd6d38I/AAAAAAAAH5k/SMgerCT6ax0/s1600/Ruby%2527s%2Bjukebox%2Bwww.ShopCurious.com.jpg

monumental

extremely great in quality or size


Segregation

The act of separating people based on race


Source
Two different water fountains were required for different races.
http://aapf.org/wp-content/uploads/2013/01/segregation1.jpeg

Transistor Radio

A portable, pocket-sized, radio invented in 1954 that allowed users to listen to music and broadcasts anywhere they went.