The term 'affectionate peck' can be replaced with various synonyms, depending on the context and level of intimacy of the interaction involved. For instance, 'kiss on the cheek' can be used as a mild and friendly version, appropriate for greeting acquaintances or showing respect to elders. 'Loving kiss' and 'passionate kiss' are more intimate versions, representing a romantic or sexual relationship. Similarly, 'smooch', 'snog', and 'make-out' are used to depict intense or prolonged kissing. 'Peck on the lips' conveys a light and quick expression of love, while 'buss' and 'friendly kiss' refer to a formal or platonic sign of goodwill. Overall, using an appropriate synonym can help to convey the intended emotional message and avoid miscommunication.