Pillow Words Ii Poem by Jonathan ROBIN

lucubration: noun: a solemn literary work that is the product of laborious cogitation
concatenation: the linking together of a consecutive series of symbols or events or ideas etc

Notes: Utamakura 歌 枕 or Pillow Words, refer to place names used in Japanese poetry, where a kind of code with a special meaning, mood, season or historical reference is implied. To mention YOSHINO provides all the background of Cherry Blossoms and Yoshitsune. The use of utamakura - generally place names or their features - cultivates allusion and intertextuality between poems within a traditional context.

They are akin to 'makura kotoba' 枕 詞, 枕 言 葉, 'pillow words', normal words used as codes to bring out a mood or mental scene for the reader.
Kakekotoba 掛 詞 ', pun words having more than one meaning add an extra twist to poems and thus ‘pillow' or ‘bridge' two concepts.