Matched context for pollution and cleaner

The page lists matched contexts for pollution and cleaner.

Share - pollution	Share - cleaner	Phrase
10.51%	41.86%	air {pollution or cleaner}
2.48%	0.45%	{pollution or cleaner} emission
0.23%	0.93%	{pollution or cleaner} element
0.73%	0.40%	{pollution or cleaner} gas
0.65%	0.24%	{pollution or cleaner} system
0.24%	0.52%	engine {pollution or cleaner}
0.75%	0.26%	exhaust [physical/chemical] {pollution or cleaner}
0.45%	0.17%	oil {pollution or cleaner}