Temperature and heat are two important concepts in thermal physics. Not only are students difficult to distinguish, but in the history of science, these concepts have also made various forms of misunderstandings for scientists. This study reviewed and analyzed two concepts, temperature and heat, introduced in the 12-year Curriculum for Basic Education in Science. Then, the clarifying of the scientific terminologies, temperature and heat, was also made. The researcher also compared everyday language and scientific terminologies to illustrate the importance of the correct understanding of the scientific terminologies.