What parts of speech can Mercury be?

"Mercury" can be several parts of speech depending on the context:

Noun:

* Planet: "Mercury is the smallest planet in our solar system."

* Roman god: "Mercury was the messenger of the gods."

* Element: "Mercury is a heavy, liquid metal."

* Substance: "The thermometer contained mercury."

Adjective:

* Relating to the planet Mercury: "The Mercury mission sent back incredible images."

* Made of mercury: "The mercury lamp illuminated the room."

Verb:

* To treat with mercury: "They used to mercury people for syphilis." (This is an outdated and dangerous practice.)

Proper Noun:

* When referring to the specific planet, god, element, or substance: "Mercury is a very hot planet."

It's important to look at the sentence to determine the correct part of speech for "Mercury."