Look-alike forms can have distinct morphological functions.
Word / formMeaning / explanation
عَالِمٌa knowledgeable person; an active participle/descriptive noun.
أَعْلَمُmore knowledgeable; an ism al-tafḍīl.
عَلِمَhe knew or learned; a perfect verb.
Likewise, ضَارِبٌ means “one who strikes,” while the formal comparative أَضْرَبُ indicates a greater degree of striking. A shared root alone does not justify treating a past action, ordinary description and comparison as identical.