Matched context for sparking and corona

The page lists matched contexts for sparking and corona.

Share - sparking	Share - corona	Phrase
17.40%	9.19%	{sparking or corona} plug
1.66%	52.69%	{sparking or corona} discharge
2.04%	1.52%	{sparking or corona} device
1.76%	1.97%	{sparking or corona} electrode
1.25%	1.79%	{sparking or corona} gap
0.32%	0.56%	{sparking or corona} system
0.56%	0.93%	produce {sparking or corona} [perform operation]