I never heard about "boiling water" as a state of matter. Boiling water has two states of matter. Liquid and Gas, including a phase change. There are many of states of matter. I, as a chemist, would not be able to tell you most of them out of my head.
Bose-Einstein condensate being one of them. Boiling water is not a state of matter. It may be a description of water, like cold water, flavoured water, carbonated water.
georgefrowny|5 days ago
Which is why "state of matter" is, itself, often in the dictionary, possibly to the dismay of the Team Single Word in this comment section.
Beijinger|5 days ago