"Apomorph" is a term used in the field of biology to describe a synthetic derivative or an analog of a morphine molecule. However, there are several synonymous terms that can be interchangeably used to refer to this substance. One such term is "apomorphine", which has the same meaning. Another synonym is "morphine analogue", which accurately describes a substance that is similar to morphine but has been chemically modified. Additionally, the term "opioid derivative" can also be used to refer to an apomorph, as it indicates a substance that is derived from the opioid class of drugs. Therefore, these various synonyms can be employed in scientific discussions to describe these related substances.