Cluster — 7 works.
Defining concepts
Riddle (5), Nature (4), Animals (4), Lyric (3), Transience (3), Secrecy and Concealment (2), White and Red (2), Seasons (1), Clothing and Costume (1), Book of Nature (1), Epigram (1), Trickster (1), Identity (1), Autumn (1), Birds (1)