different between puffling vs puffing

English

puff(in) +? -ling.

puffling (plural pufflings)

puffing

present participle of puff
(US) Leaving a car engine running unattended, especially in cold weather to warm it up.

puffing (plural puffings)

The act of one who puffs.
the puffings and pantings of a man running to catch a train
A puffy ornament.
- 1825, The Ladies' Monthly Museum (volume 21, page 50)
  Evening dresses are trimmed in a variety of ways, with puffings of crape, fringes, and ornaments, of the richest patterns […]
(law) An opinion or judgment, often made by the seller of property to a potential buyer, that is not made as a representation of fact.

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