different between pinning vs panning

English

pinning

pinning (countable and uncountable, plural pinnings)

The action of the verb pin in any sense.
A ceremony in which a pin badge is given.
- 2003, James A. Schnell, Case Studies in Culture and Communication: A Group Perspective
  There were a variety of informal traditional activities that occurred in recognition of events such as birthdays, pinnings (when a member gave his fraternity pin to his girlfriend to acknowledge preengagement), and engagements.
(physics) The establishment of the definite quantum state of a particle, or of the occupation number of a system of particles

panning (plural pannings)

The act of one who pans, as for gold.
Material that has been panned.
- Geological Survey Professional Paper (volumes 265-270, page 122)
  A trace of metazeunerite was identified in pannings from the dump of the upper of the two adits.
(audio) The act by which a sound is panned.
(informal) Thorough criticism.

panning

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