Vaccine - (Vac-seen) The software installed on your robotic vacuum enabling the homeowner to see their vacuum, remotely, from both Android or Apple cell phones.
suitcase _
This was an infamous legal issue, which endeavored to decide whether or not, a suit could be required to have buttons, and whether or not, astronauts could be required to wear one.
Freelance - In Medieval times soldiers conscripted into the military were issued lances. The cost of the lances was not withheld from the paltry sum the soldiers were paid. Hence, the lances were considered "freelances".