What is Brand Taxonomy ?

Yet another term in the world of Branding...
'Taxonomy' by word means the way of classifying things in a scientific manner, as per their features, benifits, constraints relationship with other similar things.
"Brand Taxonomy" comes in Picture when a Mother Brand, comes up with new sub-brand. Under this, we classify the Brand and Sub-Brand relationship. This also includes the essense of Brand Identity, Brand Image, Features, Benefits and Constraints that the new sub - brand has inherited from its Mother Brand.
Example : Nestle - All major Brands and their respective sub-brands of Nestle, enjoys the same Brand Image and Identity in the market. (Same is the case with Maruti Suzuki, ITC Wills Cigarette etc.).