American Heritage Dictionary
(3)
Century Dictionary
GNU Webster's 1913
WordNet
(2)
Elsewhere on the web
And that's the great non-articulated agony of suburbia, and one of the reasons that it lends itself to ridicule.— James H Kunstler dissects suburbia
It was in this film that we saw Ball take on the seedy underbelly of suburbia, an interpretation he would deepen and perfect in the brilliant HBO series— /Film
Along with his schadenfreude-soaked claims about the end of suburbia, automobiles, and all things superficial, he comes in with stark assertions that we'll all be making our own music and acting on stage for each other, instead of listening to that damnable recorded "rock-roll" music and the disco and suchlike.— Peak Energy

Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.