1950s neologisms - How Old Today?

1

Colorless green ideas sleep furiously

2

Disco

2

Generation_X

2

Rock_and_roll

5

Acadiana

5

Cajun_Country

5

Clade

5

Eyewitness_News

5

Kibibyte

5

Rock'n'roll

5

Semi-presidential

5

Semi-presidential_republic