verbs
stop work in order to press demands
"The auto workers are striking for higher wages"; "The employees walked out when their demand for better benefits was not met"
leave abruptly, often in protest or anger
"The customer that was not served walked out"
is a type of (narrower)
go away from a place
"At what time does your train leave?"; "She didn't leave until midnight"; "The ship leaves at midnight"
leave suddenly, often as an expression of disapproval
"She walked out on her husband and children"
is a type of (narrower)
leave someone who needs or counts on you; leave in the lurch
"The mother deserted her children"