Difference between Brand cannibalism, proliferation and rejuvenation

Brand Cannibalism: When two brand in the same product line, offered by same player target same market segment and compete with each other by eating away the market share without adding any value to the marketer.
Example:Hero Honda Glamour and Herohonda Splendor

Brand proliferation: when one company introduce new brands in the same productlines and hence try to cover each and every market segment for that product line.
example: HLL has different brands in shampoo product line offering a wide range of choice for customer of every segment.

Brand Rejuvenation: When marketers identifies that the decline stage for a brand has come and the concern brand is going to die marketer injects new life in brand by adding new product features, packaging or by changing STP strategies. this activity in whole is called Brand Rejuvenation.
example: To Brand Rejuvenation Herohonda Splendor company launched HeroHonda Splendor NXG

Source: citesales.com