boarder
bôr′dər
noun

1. One who boards, especially.
2. One who pays a stipulated sum in return for regular meals or for meals and lodging.
3. One who goes on board a vessel as part of an assault or military action.

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border
bôr′dər
noun

1. A part that forms the outer edge of something.
2. A decorative strip around the edge of something, such as fabric.
3. A strip of ground, as at the edge of a garden or walk, in which ornamental plants or shrubs are planted.
4. The line or frontier area separating political divisions or geographic regions; a boundary.