Matched context for heating and lighting

The page lists matched contexts for heating and lighting.

Share - heating	Share - lighting	Phrase
10.10%	66.06%	{heating or lighting} [purpose] system
15.78%	4.76%	{heating or lighting} [purpose] element
10.36%	3.31%	{heating or lighting} [purpose] means
3.17%	8.25%	{heating or lighting} [purpose] unit