This distinction might be hashed out in terms of the traditional distinction between logical qualities, or as a distinction between two illocutionary speech acts: assertion and rejection.
en.wikipedia.org Gambits used at the beginning of an utterance are seen as cues that signal not only the illocutionary feature of an utterance, but also its syntactic-semantic unfolding.
en.wikipedia.org The illocutionary act is concerned with what an actor is doing in saying something (e.g. when someone says hello, he is greeting another person).
en.wikipedia.org Speech acts, according to this body of theory, can be analysed on three different levels: locutionary, illocutionary and perlocutionary.
en.wikipedia.org The terminology he introduced, especially the notions locutionary act, illocutionary act, and perlocutionary act, occupied an important role in what was then to become the study of speech acts.
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