Morning sickness is a common condition experienced by women during pregnancy. It is characterized by nausea and vomiting, usually occurring in the morning. However, there are various synonyms for this term that can be used interchangeably. These include pregnancy nausea, gestational sickness, expectant mother's sickness, prenatal vomiting, and antenatal nausea. While morning sickness is common during the first trimester, it can persist throughout the pregnancy in some cases. The use of these synonyms can provide a more comprehensive understanding of the condition and help women communicate their symptoms to healthcare providers.