Matched context for lighting and switching

The page lists matched contexts for lighting and switching.

Share - lighting	Share - switching	Phrase
3.31%	15.51%	{lighting or switching} [purpose] means
8.54%	5.89%	{lighting or switching} [purpose] circuit
4.76%	9.80%	{lighting or switching} [purpose] element
66.06%	0.70%	{lighting or switching} [purpose] system
8.25%	2.13%	{lighting or switching} [purpose] unit