Which linguistic technique was famously used in naming the company 'Kodak' according to founder George Eastman?

Brand naming is a fascinating intersection of linguistics and marketing. Companies invest significant resources in creating names that are memorable, pronounceable across cultures, and evoke positive associations. Linguistic principles like phonaesthetics (how pleasant words sound), semantic transparency, and cross-cultural phonological patterns all play crucial roles in successful brand naming strategies. Test your knowledge about this specialized field of applied linguistics!

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Onomatopoeia (using a word that sounds like what it represents)
Sound symbolism (using the hard 'K' sounds that are perceived as strong and memorable across languages)
Eponymy (naming after the inventor's family name)
Portmanteau (blending two existing words together)