Which linguistic phenomenon explains why products like 'Kleenex' and 'Xerox' evolved from brand names to generic terms for their respective product categories?

Product naming is a fascinating intersection of linguistics and marketing psychology. Companies invest millions in research to create names that trigger specific cognitive and emotional responses. From phonetic symbolism (how sounds convey meaning) to morphological construction (how word parts combine), linguistic principles directly influence consumer perception and purchasing behavior. How well do you understand the science behind what makes product names memorable and effective?

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Genericide - when trademark terms become generic through common usage
Semantic broadening - when words naturally expand their meaning over time
Linguistic bootstrapping - when consumers need terminology for new product categories
Brand metonymy - when a brand name becomes a figurative reference to all similar products