The main difference between full time and part time jobs is the number of working hours, with full time typically being around 35-40 hours a week and part time being less than that, often around 20 hours. Full time employees usually receive more benefits, such as health insurance, paid time off, and retirement plans, whereas part-time employees may receive fewer or no benefits, depending on the company. Job security can also vary, with full time employees often having more stability and protection against layoffs, while part-time employees may be let go more easily. However, some companies do offer benefits to part-time employees, so it's worth checking the specific job offer to see what's included.