Since a lot of people seem to not know:
Boycott: A call for consumers to cease purchase or use of a product or brand until a demand is met.
Walkout: A one day action where all of the workers at a company, during the day, suddenly all stop working and walk out to rally
Strike: A prolonged action where all of the workers at a company cease working until a demand is met. Which often involves...
Picket lines: When striking workers stand outside a business rallying and urging for a boycott