Early exegetes sometimes used naskh in a broad sense close to removal or modification of an initially apparent meaning. In that broad usage, specifying a general text, qualifying an unrestricted phrase, or clarifying an earlier expression could also be described under the term.
Later legal theorists gave technical abrogation a narrower definition: the termination of an operative legal ruling by later revealed evidence. Confusing the usages can produce dramatically different counts of “abrogated verses.”
Rule: when an early source calls a verse mansūkh, first establish what the speaker means by naskh, then examine the evidence.