Matched context for pollute and contaminate

The page lists matched contexts for pollute and contaminate.

Share - pollute	Share - contaminate	Phrase
25.85%	12.12%	{pollute or contaminate} environment [perform operation]
7.37%	3.08%	{pollute or contaminate} air [perform operation]
2.87%	3.37%	not {pollute or contaminate}