| A | B |
| melting | the process by which a solid changes into a liquid |
| boiling | a process by which a liquid changes into a gas |
| melting point | the temperature at which a solid changes into a liquid |
| boiling point | the temperature at which all of a liquid can change into a gas |
| freezing | the process by which a liquid turns into a solid when it is cooled |
| freezing point | the temperature at which a liquid turns into a solid |