Matched context for parabolic and concave

The page lists matched contexts for parabolic and concave.

Share - parabolic	Share - concave	Phrase
18.99%	22.27%	{parabolic or concave} [shape] surface
34.49%	3.72%	{parabolic or concave} [shape] shape
9.17%	0.40%	generally {parabolic or concave}