The term "photo shoot" only applies to commercial photography. Generally models displaying clothes in the fashion industry or products being shot for print advertisement in newspapers, magazines, signage, etc.
Scenario One
Joe Blow in a parking lot with a car and his new DSLR machine gunning shots is not a photo shoot.
Scenario Two
Joe Blow Sr. who met with a director of marketing or an editor, etc. and was given an assignment or shooting list is. There is normally an agenda and requirements involved and generally everything is story-boarded out before even getting to the location, be it a studio or in the field. [We won't get into the legality issues and permissions involved of shooting commercially on both private and public property.]
After the photography session the photos are then sent back to said companies marketing department where they are forwarded to their illustrator(s) or graphic designer(s) to be edited then the final product will go back to the editors for review before being released to the publisher for print.
That is a photo shoot