Bouba/kiki effectThe bouba/kiki effect or kiki/bouba effect is a non-arbitrary mental association between certain speech sounds and certain visual shapes. Most narrowly, it is the tendency for people, when presented with the nonsense words bouba ˈbu:bə and kiki ˈki:ki:, to associate bouba with a rounded shape and kiki with a spiky shape. Its discovery dates back to the 1920s, when psychologists documented experimental participants as connecting nonsense words to shapes in consistent ways.
Sound symbolismIn linguistics, sound symbolism is the resemblance between sound and meaning. It is a form of linguistic iconicity. For example, the English word ding may sound similar to the actual sound of a bell. Linguistic sound may be perceived as similar to not only sounds, but also to other sensory properties, such as size, vision, touch, or smell, or abstract domains, such as emotion or value judgment. Such correspondence between linguistic sound and meaning may significantly affect the form of spoken languages.
InterjectionAn interjection is a word or expression that occurs as an utterance on its own and expresses a spontaneous feeling or reaction. It is a diverse category, encompassing many different parts of speech, such as exclamations (ouch!, wow!), curses (damn!), greetings (hey, bye), response particles (okay, oh!, m-hm, huh?), hesitation markers (uh, er, um), and other words (stop, cool). Due to its diverse nature, the category of interjections partly overlaps with a few other categories like profanities, discourse markers, and fillers.
OnomatopoeiaOnomatopoeia is the use or creation of a word that phonetically imitates, resembles, or suggests the sound that it describes. Such a word itself is also called an onomatopoeia. Common onomatopoeias include animal noises such as oink, meow (or miaow), roar, and chirp. Onomatopoeia can differ by language: it conforms to some extent to the broader linguistic system; hence the sound of a clock may be expressed as tick tock in English, tic tac in Spanish and Italian (shown in the picture), in Mandarin, kachi kachi in Japanese, or tik-tik in Hindi.
ReduplicationIn linguistics, reduplication is a morphological process in which the root or stem of a word (or part of it) or even the whole word is repeated exactly or with a slight change. The classic observation on the semantics of reduplication is Edward Sapir's: "generally employed, with self-evident symbolism, to indicate such concepts as distribution, plurality, repetition, customary activity, increase of size, added intensity, continuance." Reduplication is used in inflections to convey a grammatical function, such as plurality, intensification, etc.
