فقه اللغة وأسرار العربية للثعالبي (ط الحلبي) - Internet Archive
It serves as a specialized dictionary that helps writers and poets choose the most precise terms for their context. Notable Editions: The edition verified by Mustafa al-Saqqa Ibrahim al-Abyari
(synonyms with subtle differences) between Arabic words. For example, it lists various words for "sleep" or "hunger" based on intensity or specific circumstances. Significance: