Matched context for back up and back up

The page lists matched contexts for back up and back up.

Share - back up	Share - back up	Phrase
31.15%	31.15%	battery [does] {back up or back up}
13.57%	13.57%	{back up or back up} ram [perform operation]
10.01%	10.01%	vehicle [does] {back up or back up}
9.56%	9.56%	{back up or back up} trailer [perform operation]
8.26%	8.26%	fuel [does] {back up or back up}
7.16%	7.16%	{back up or back up} pipe [perform operation]
6.31%	6.31%	{back up or back up} memory [perform operation]
4.27%	4.27%	ring [does] {back up or back up}
2.94%	2.94%	{back up or back up} fuel [perform operation]
2.75%	2.75%	so [resume] {back up or back up}
2.30%	2.30%	means [does] {back up or back up}
1.66%	1.66%	{back up or back up} modal will