The water laughed as it flowed over the rocks.
"My daughter's laughter is sunshine to my heart" is an example of a metaphor.
metaphor
laughter - humor as tears - sadness
Happiness shone from her face is one of them.
There is no specific collective noun for laughter. Appropriate nouns that suit the context can be used; for example a roar of laughter, a swell of laughter, a crackle of laughter, etc.
"My daughter's laughter is sunshine to my heart" is an example of a metaphor.
In the line "What if the laughing legend of the November afternoon finds you?" the phrase "laughing legend" is an example of a metaphor. It compares laughter to a myth or story that is known and celebrated.
Metaphor
A directly stated metaphor is when a comparison between two unlike things is explicitly made in a sentence without using "like" or "as." For example, "Her laughter was music to my ears."
metaphor
laughter - humor as tears - sadness
Happiness shone from her face is one of them.
There is no specific collective noun for laughter. Appropriate nouns that suit the context can be used; for example a roar of laughter, a swell of laughter, a crackle of laughter, etc.
Her laughter was music to his ears, a symphony that filled his heart with joy.
metaphor
Jubilance is a chorus of laughter that fills the air like colorful confetti.
"Roared with laughter" is an example of personification, attributing human qualities (in this case, the act of roaring) to non-human entities (laughter).