Matched context for rigidity and selectivity

The page lists matched contexts for rigidity and selectivity.

Share - rigidity	Share - selectivity	Phrase
3.63%	20.04%	high [size] {rigidity or selectivity}
3.04%	15.03%	improve {rigidity or selectivity} [perform operation]
3.70%	8.52%	have {rigidity or selectivity} [perform operation]
0.88%	17.81%	improved [effectiveness] {rigidity or selectivity}