Matched context for safety and ventilation

The page lists matched contexts for safety and ventilation.

Share - safety	Share - ventilation	Phrase
3.13%	8.27%	{safety or ventilation} valve
2.75%	7.73%	{safety or ventilation} system
4.27%	4.05%	{safety or ventilation} device
1.31%	0.79%	{safety or ventilation} apparatus
0.19%	9.40%	{safety or ventilation} line
0.70%	1.45%	{safety or ventilation} means
1.70%	0.84%	{safety or ventilation} switch
0.31%	0.48%	{safety or ventilation} assembly
0.80%	0.85%	{safety or ventilation} circuit
0.63%	1.56%	{safety or ventilation} purpose
0.19%	0.81%	additional [importance] {safety or ventilation}
0.37%	2.11%	provide {safety or ventilation} [perform operation]