  In general, pleasure is understood broadly below, as including or as included in all pleasant feeling or experience: contentment, delight, ecstasy, elation, enjoyment, euphoria, exhilaration, exultation, gladness, gratification, gratitude, joy, liking, love, relief, satisfaction, Schadenfreude, tranquility, and so on. Pain or displeasure too is understood broadly below, as including or as included in all unpleasant experience or feeling: ache, agitation, agony, angst, anguish, annoyance, anxiety, apprehensiveness, boredom, chagrin, dejection, depression, desolation, despair, desperation, despondency, discomfort, discombobulation, discontentment, disgruntlement, disgust, dislike, dismay, disorientation, dissatisfaction, distress, dread, enmity, ennui, fear, gloominess, grief, guilt, hatred, horror, hurting, irritation, loathing, melancholia, nausea, queasiness, remorse, resentment, sadness, shame, sorrow, suffering, sullenness, throb, terror, unease, vexation, and so on. ‘Pain or displeasure’ is usually stated below just as ‘pain’ or just as ‘displeasure’. Further economy is sometimes secured by stating, just about pleasure or just about displeasure, points that do or might apply to both. Whether such pleasure-displeasure parallels actually hold is a significant further issue, touched upon only briefly in the present entry.