What are the differences between the nouns, "shoot" and "shot"?

Question

I am confused about the difference between photo shoot and photo shot.

Here are a few examples of what I mean:

1. In a publishing house, the director talking to an assistant:

   We have a photo shoot.

2. An app name:

   Instant photo shot

3. Alice met a guy on Tinder last week who showed her a boob shot of a girl his roommate hooked up with, and it was her very own boob.

4. A: I'm gonna steal your cell phone for a second.

   B: Wait a minute. Why?

   A: Just relax, scaredy-cat.

   B: What are you doing?

   A: I'm taking a picture of my junk. No. I'm adding myself to your calendar right here, next Thursday.

   B: Are you asking me on a date? Is that a yes?

   A: I don't know. Let me see that junk shot first.

Answer 1

shoot & shot are film/movie & professional photographic terms.

shoot describes the 'event' at which film stock is used to make the movie/photographs.

The shoot is a general term for the entire occasion, at which there may be several hundred people, all doing different tasks that make up the event; from catering, locations & logistics, transport, carpenters & riggers, lighting specialists, sound recordists, cameramen & grips [camera movers], production crew, actors, director … all are on the same 'shoot'.

Stills & movie would be differentiated as
photo shoot / stills shoot or
film shoot / movie shoot.
'stills' is the movie term for non-moving pictures.
A stills photographer would call them shots or photographs, as there is no 'moving' alternative to cause confusion.

A shot is either

• The specific way the camera is lined up &/or moved, re-focussed etc., to point at the actors or scene, in order to film that one small section of the action, or
• for stills photography, either the above, or simply any one single photograph - whether it required an entire film crew to take it or not.

An aside… this is where we get the term "Who is calling the shots?"
The answer is - the Director.