By part of speech
From Bahai9
- By entity (noun)
- By protagonist (human noun; see also Person, human, individual)
- Thing
- Concept/By emotion
- By relationship - Relationship between two subjects (e.g., 'Abdu'l-Bahá and Leo Tolstoy) (conjunction or preposition)
- By action (verbs)
- By description (adjectives or adverbs)
- By expression of emotion (interjection)
