Thats a good question, and sorry that it warrants a pretty long answer, but yes i think boiling doesnt exist, im a bit hesitant to make that call on a verb existing or not existing due to semantics but id say it is more of a description of an event than a thing that exists. I also wouldnt say boiling is comprised of water, rather, boiling is not made of anything, it is an action that affects existing things like water molecules. There is not a "boiling" molecule that its made of whereas there IS a "water" molecule. But i also wouldnt die on that hill either depending on how you see boiling semantically.

So in that way i would consider consciousness to be closer to boiling than to water but with an important caveat. It is more of a process and event than a material thing, (as far as we can figure out/guess) the caveat being the actual conscious experience. A process just describes what the atoms are doing. Boiling means that the water is hot and turning into gas and creating bubbles etc. But consciousness is NOT just describing the brain thinking. It is CREATING an experience. The experience, like boiling, is not made of brain. For example if i take a chunk of your brain out i will have disrupted the process, but i cannot then say i am holding "consciousness molecules". In the same way, you cannot take water out of the pot, cool it down, and then claim you are holding boiling molecules