different between giggling vs roaring

English

giggling

giggling (plural gigglings)

The act of producing giggles; high-pitched laughter
- 1959, Boys' Life (volume 49, number 5, May 1959, page 56)
  Once there, he blushingly went through the procedure, having to fold and refold the flag about three times, to the twitterings and gigglings of twelve little girls.

roaring

Intensive; extreme.
Very successful; lively.
Synonyms: thriving, prosperous, bustling; see also Thesaurus:prosperous
The ice-cream sellers did a roaring trade in the midday heat.
- 1903, Robert Barr, The O'Ruddy Chapter 17
  But finally we came to a river with hundreds of boats upon it, and there was a magnificent bridge, and on the other bank was a roaring city, and through the fog the rain came down thick as the tears of the angels. "That 's London," said I.

roaring

roaring (plural roarings)

A loud, deep, prolonged sound, as of a large beast; a roar.
An affection of the windpipe of a horse, causing a loud, peculiar noise in breathing under exertion.
(Britain Yorkshire, North Midlands, informal) to cry

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