boarder:
(plural: ‘boarders‘)

some boarders at a boarding school (hostel)
a person who lives at another person’s house (home) by paying for his bed and food; a paying guest; a lodger;
a student who lives at his/her school hostel (at boarding schools);
a person who uses/rides a board — a piece of wooden or plastic plank with or without wheels, as a sport — a snow-boarder, surf-boarder, sail-boarder, sand-boarder, etc.,

two little sand-boarders
After retirement as a school teacher, Mrs Clara accepted some boarders and lived happily with the money she got from them, looking after them and her beautiful garden.
Young Bob did not have much acquittance with any of his relatives as he was a boarder most of his student life, changing from one boarding school to another.
Most big city administrations are faced with the menace of skateboarders damaging the sidewalks and park benches by riding on them on their skateboards.

Boarders boarding a ship
