Matched context for difficult and hard

The page lists matched contexts for difficult and hard.

Share - difficult	Share - hard	Phrase
26.56%	2.57%	{difficult or hard} [difficulty] it
0.47%	11.45%	{difficult or hard} [difficulty] material
3.88%	1.02%	{difficult or hard} [difficulty] become
0.68%	0.97%	{difficult or hard} [difficulty] condition
0.59%	1.21%	{difficult or hard} [difficulty] operation
0.20%	0.77%	{difficult or hard} [difficulty] product
0.22%	0.39%	{difficult or hard} to occur
0.13%	0.49%	{difficult or hard} to take
0.17%	0.26%	relatively {difficult or hard}
1.70%	0.43%	very {difficult or hard}