What are the solitary words and solitary words in a poem?

1. Lonely clouds go to leisure alone, Tang Li Bai's Sitting alone in Jingting Mountain

2. Lonely rooms are full of tears, Tang Li Bai's Night Cry

3. Lonely canoe, Song Qin Guan's Man Ting Fang Hong Ku Hua Fan

Song Anonymous's Xijiang Moon Wan Mu Jing Frost Fold

7. Riding alone in the night, Song Anonymous's Huanxisha

8. I'm lonely in Wei, Jin Cao Pi's Short Songs

9. Lonely peak stays alone, and Song Shi Hui Yuan.