An isobaric process and an isochoric process hold constant, respectively:

1. The prefix iso- means equal, and the rest of each word names the quantity held fixed. 2. Isobaric comes from baros, meaning pressure, so pressure is constant. 3. Isochoric comes from choros, meaning volume, so volume is constant. 4. In an isochoric process no volume change occurs, so no external work is done. 5. Describing these two interchangeably, which the report records, loses that distinction entirely. _Source: NECTA ACSEE 2023 Physics 131/1, Question 6: Heat (First law of Thermodynamics)_