What part of speech is the word light?

The word "light" can be several parts of speech, depending on how it's used in a sentence:

* Noun: "The light from the sun was blinding." (refers to the actual thing - sunlight)

* Adjective: "He wore a light blue shirt." (describes a quality - the color)

* Verb: "Please light the candles." (an action - to ignite)

* Adverb: "The room was lit very light." (describes how the room was lit)

To determine which part of speech it is, you need to look at how the word is used in a specific sentence.