Flirting is consensual and conscious. Even when it's not too subtle, a flirt won't come across as demanding or like they expect you to respond positively, if at all. Harassment, meanwhile, is obnoxiously persistent.
Unwanted attention can make life awkward, especially if it is at your workplace.
The storm surrounding star cricketer Chris Gayle over an attempt to flirt with an Australian presenter on live TV intensifies as new allegations about his behaviour towards women emerge.