In this paper, the basic and the extensional meaning of the Chinese word, shui (水), and the Korean word, mul (물), were compared for their similarities and differences, based on the different word meaning characteristics. Both words have the basic meaning of “water.” The extensional meaning and usage of these two words overlap semantically under certain conditions, but they have different characteristics in the two languages from the perspective of word formation, reflecting the differences in thinking and cognitive framework of the different cultural backgrounds. The research also found that the words differ greatly in terms of semantic extension. Mul in particular had a far richer and more diverse extended semantic meaning than shui.

Background: Physical activity and quality of life (QOL) influence the health status of older adults. Recently, the use of wearable devices to monitor physical activity has increased. Objects: This study examined the relationship between the amount of physical activity, measured using a wearable device, and QOL among older adults. Methods: In total, 71 older adults (aged ≥ 65 years) were enrolled. The amount of physical activity was measured using a wearable device with a wrist strap, and daily physical activity was classified according to intensity (sedentary, light, moderate, or very active). Self-reported QOL was evaluated using the Short Form 36 (SF-36) questionnaire. Pearson and Spearman correlation analyses were conducted to analyze parametric and non-parametric variables, respectively. The relationship between amount of daily physical activity and SF-36 scores was assessed. Results: The correlation analyses revealed positive correlations between the amount of moderate- intensity and very active physical activity (minutes/day) and SF-36 scores (p < 0.05). Conclusion: Physical activity of at least moderate intensity is associated with better QOL in older adults. Further studies are required to verify the effects of increased physical activity on QOL in older adults.