* Noun: When referring to the quality of being light (in weight, color, or intensity) or the state of being cheerful or carefree.
* Example: "The lightness of the fabric made it perfect for summer."
* Example: "She felt a lightness of spirit after spending time in nature."
* Adjective: When describing something as being light (in weight, color, or intensity).
* Example: "The lightness of her touch surprised me."
* Example: "The lightness of the colors in the painting was calming."
* Adverb: When modifying a verb, adjective, or another adverb to indicate a light manner or degree.
* Example: "He walked lightly through the woods."
* Example: "The door closed lightly behind her."
To determine the correct part of speech, consider the sentence and how "lightness" is being used within it.