Intergenerational. Apply that Word to the relationship that exists between two or more generations.A generation is traditionally calculated in 20 years. So for example the different opinions with respect to music, among young adults of 40 and 20 years or more it is given as a result of the call " gap intergenerational " that is something common that affects two different generations and is referred to a single theme. Each who has his vision of the thing and for each your approach is correct and the other is wrong.