Variant Product vs Variant Article Product

Product which doesn't have sellable SKU. This product behave as the wrapper which has description and has many variance of the product.

For Example: Apple IPOD is a variant product. And it Variance are Red, Blue, Silver, White, etc.

So the Variant Article product are the child of Variant product. And example of VariantArticleProduct is Apple IPOD - Blue, Apple IPOD- Red etc and which is sellable.