Matched context for density and shortage

The page lists matched contexts for density and shortage.

Share - density	Share - shortage	Phrase
1.55%	16.30%	fuel {density or shortage}
4.42%	4.84%	air {density or shortage}
2.14%	9.74%	energy {density or shortage}
0.84%	7.56%	detect {density or shortage} [perform operation]
1.36%	2.43%	have {density or shortage} [perform operation]
0.17%	7.80%	fluid {density or shortage}