Noun : You have the alternative of riding or walking. ,The alternative to riding is walking. ,There was no alternative but to walk.    From Dictionary.com. 

Adjective : The alternative possibilities are neutrality and war. ,an alternative newspaper; alternative lifestyles.    From Dictionary.com. 

It can lead to the creation of entirely new forms of social structure -- the coffee house or the commune -- but these have to be adopted by individuals, consolidated into subcultures, and able to survive a reactionary mainstream that is innately antagonistic to subcultures of alternativity.    From Wordnik.com.  [More Aesthetics] Reference

It’s the fact that Fopp has succeeded because it stepped outside the conventional indie record shop model of pure alternativity that intrigues me.    From Wordnik.com.  [War of All Against All: Realism vs Fabulism? Er, No…] Reference

That impurity of alternativity is where, for me, there’s a subtle difference between what I’m imagining and the alternative section in the Glasgow Tower Records as I remember it.    From Wordnik.com.  [War of All Against All: Realism vs Fabulism? Er, No…] Reference