Give an example of two Khasi words that are spelled identically but carry different meanings based solely on stress placement, and explain the role of stress in each instance.
In Khasi, certain words are spelled identically but derive distinct meanings solely from the placement of prosodic stress. Stress in linguistics refers to the relative emphasis or prominence given to a particular syllable within a word, typically manifested through higher pitch, increased loudness, and sometimes slightly longer duration of the stressed syllable. The phonology of Khasi, the study of its sound system, demonstrates how this feature can differentiate word meanings. A syllable is a unit of pronunciation containing a single vowel sound.
An example of such a pair of Khasi words is "pynhiar". When stress is placed on the first syllable, "pyn", the word is pronounced with emphasis on `PYN`-hiar. In this instance, the stressed "pyn" acts as a causative prefix, indicating an action that makes something happen, specifically causing something to move downwards. Therefore, "PYN-hiar" means "to lower" or "to make descend", such as lowering an object or making someone come down from a height. Here, the initial stress on "pyn" signals a causative action of bringing something down.
Conversely, when stress is placed on the second syllable, "hiar", the identical spelling "pynhiar" is pronounced with emphasis on pyn-`HIAR`. In this case, the stressed "hiar" functions as the main verb root relating to the act of expulsion. Thus, "pyn-HIAR" means "to breathe out" or "to exhale", specifically referring to the physiological process of releasing air from the lungs. The final stress on "hiar" here distinguishes the word as referring to a respiratory action.
Therefore, the identical Khasi spelling "pynhiar" represents two distinct words. Their meanings, "to lower" versus "to exhale", are differentiated exclusively by the placement of stress on either the first ("pyn") or the second ("hiar") syllable. This demonstrates the critical role of stress as a phonological feature in Khasi for distinguishing lexical meaning.