Some usages can include both of these factors. Subjective well-being (swb)^[20]includes measures of current experience (emotions, moods, and feelings) and of 



life satisfaction.^[21] For instance Sonja Lyubomirsky has described happiness as “the experience of joy, contentment, or positive well-being, combined with a sense that one's life is good, meaningful, and

specsypies

worthwhile.”^[22]Eudaimonia,^[23] is a Greek term variously translated as happiness, welfare, flourishing, and blessedness. Xavier Landes^[24] has proposed that happiness include measures of subjective wellbeing, mood and eudaimonia.^[25]

These differing uses can give different results.^[26] For instance the correlation of income levels has been shown to be substantial with life satisfaction measures, but to be far weaker, at least above a certain threshold, with current experience measures.^[27][28] Whereas Nordic countries often score highest on swb surveys, South American countries score higher on affect-based surveys of current positive life experiencing.^[29]

The implied meaning of the word may vary depending on context,^[30] qualifying happiness as a polyseme and a fuzzy concept.

Some users accept these issues, but continue to use the word because of its convening power.^[31]