Matched context for superimpose and sum

The page lists matched contexts for superimpose and sum.

Share - superimpose	Share - sum	Phrase
8.12%	19.55%	{superimpose or sum} signal [perform operation]
9.60%	3.25%	{superimpose or sum} voltage [perform operation]
4.01%	3.26%	{superimpose or sum} power [perform operation]
1.38%	3.93%	means [does] {superimpose or sum}
2.06%	1.03%	{superimpose or sum} modal can