differencesnouns
I saw this in VMware's annual report:
We sell and market our products largely through a network of channel partners, which includes distributors, resellers, system vendors, and systems integrators. . . .
What’s the difference between distributors and resellers?
A rock is bigger, possibly immovable, you couldn't throw it with one hand, at a pinch you might be able to with two.
Above, a Google Image result for "Rock", below, for "Stone"
Note that a boulder is probably bigger than a rock1.
Below, a boulder
Oh, also note that rocks and boulders are made from stone.
(This answer is mildly tongue in cheek)
1 Notable exception: Uluru/Ayre's Rock.
In common usage, imbalance is the noun meaning the state of being not balanced, while unbalance is the verb meaning to cause the loss of balance. In the context stated, the noun form should be used.
Best Answer
The two words are often equivalent, but distributor often implies a closer relationship with the manufacturer (as does dealership). The organisation may even be a wholly- or partly-owned subsidiary of the manufacturer.
A reseller often has a looser relationship with the supplier. They may not carry full stocks of spare parts, for example, and their staff may be less knowledgeable about the products.
This distinction can be seen by implication in OP's example, where the "channel partners" are listed in sequence from most- to least-closely associated with the supplier VMware.