Matched context for antechamber and prechamber

The page lists matched contexts for antechamber and prechamber.

Share - antechamber	Share - prechamber	Phrase
22.90%	8.46%	ignition {antechamber or prechamber}
19.10%	6.45%	combustion {antechamber or prechamber}
8.37%	2.27%	form {antechamber or prechamber} [perform operation]
11.11%	1.56%	{antechamber or prechamber} engine