Cluster — 50 works.
Defining concepts
Melancholy (42), Lyric (22), Grief and Loss (21), Mortality (18), Death (18), Suffering (14), Self-Knowledge (10), Paradox (8), Pain and Suffering (7), Memento Mori (6), Memory and Time (6), Eyes and Sight (6), Memory (6), Unrequited Frustrated Love (5), Night (5)