Unlike combat, the verb-noun ‘combine‘ has come under no pressure to extinguish the stress difference between its noun and verb forms. Mispronunciations are rare (and perhaps nonexistent).
The verb has the stress on the second syllable:
Platform 22, Floyd County Public Arts’ first project, combines history, education, and fine art in a series of 11 art installations located in nine public parks and two public buildings. – News and Tribune
Then there is the elegant noun, with stress on the first syllable, describing a common piece of farm equipment:
Scott Short of Sycamore drives past corn and soybean fields every day, but until Saturday, he had never been inside a tractor or a combine.
On Oct. 21, Short and about 80 others took combine rides coordinated by the DeKalb County Farm Bureau. Three local farmers, Vince Faivre of DeKalb, Steve Bemis of DeKalb and Rob Wessels of Waterman, allowed passengers to ride along in their combine cab to get a firsthand look at corn harvesting. – Daily Chronicle
Then there is another use of the noun, to denote a group ‘acting together for a commercial purpose’, again with the stress on the first syllable:
Obi Melifonwu left no doubts about his athleticism on the final day of the NFL Scouting Combine. The former UConn safety broad jumped 11 feet, 9 inches and recorded a 44-inch vertical jump on Monday, marks that were the best of the combine. – NFL.com