Matched context for knife-edge and ridge

The page lists matched contexts for knife-edge and ridge.

Share - knife-edge	Share - ridge	Phrase
28.51%	0.88%	extending [shape] {knife-edge or ridge}
9.98%	2.29%	have {knife-edge or ridge} [perform operation]
15.51%	1.12%	{knife-edge or ridge} [does] define