Matched context for obstacle and hazard

The page lists matched contexts for obstacle and hazard.

Share - obstacle	Share - hazard	Phrase
3.24%	7.45%	present {obstacle or hazard} [perform operation]
8.88%	1.70%	encounter {obstacle or hazard} [perform operation]
3.44%	1.15%	avoid {obstacle or hazard} [perform operation]
1.66%	1.79%	become {obstacle or hazard} [perform operation]
1.63%	1.75%	road {obstacle or hazard}
0.94%	0.42%	not {obstacle or hazard}