Matched context for useful and economical

The page lists matched contexts for useful and economical.

Share - useful	Share - economical	Phrase
1.58%	2.93%	{useful or economical} [effectiveness] it
1.15%	3.41%	{useful or economical} [effectiveness] system
3.34%	0.81%	particularly {useful or economical}
0.60%	2.42%	{useful or economical} [effectiveness] device
0.30%	1.32%	{useful or economical} [effectiveness] arrangement
0.95%	0.89%	{useful or economical} [effectiveness] composition
0.49%	2.01%	{useful or economical} [effectiveness] embodiment
0.21%	1.28%	{useful or economical} [effectiveness] engine
0.63%	0.71%	{useful or economical} [effectiveness] fuel
0.27%	2.18%	{useful or economical} [effectiveness] means
0.55%	1.42%	{useful or economical} [effectiveness] method
0.16%	1.79%	{useful or economical} [effectiveness] process
0.16%	0.74%	{useful or economical} [effectiveness] structure
0.32%	1.20%	{useful or economical} [effectiveness] valve
0.20%	0.33%	particularly [degree] {useful or economical}
0.20%	0.87%	very {useful or economical}