Matched context for gap and arc-gap

The page lists matched contexts for gap and arc-gap.

Share - gap	Share - arc-gap	Phrase
13.13%	12.03%	spark {gap or arc-gap}
2.73%	10.92%	plug {gap or arc-gap}
0.71%	12.35%	ignition {gap or arc-gap}
0.58%	6.37%	have {gap or arc-gap} [perform operation]