Cryotrap is a term used in scientific research which involves trapping and concentrating the analytes in a sample to make it ready for analysis. However, the term cryotrap has some synonyms which can be used interchangeably. One of the similar words is cold trap which achieves the same goal by cooling the sample to -80°C. This process reduces the vapor pressure of the volatile compounds, causing them to condense and then trapping them. Another synonym is freeze trap which entails using liquid nitrogen to freeze the sample. Lastly, there is adsorbent trap, where an adsorbent material like charcoal is used to absorb the analytes. These synonyms can be used depending on the specific technique being used and the researcher's preferences.